sample FINAL | C# Online Compiler

sample FINAL by Battosaitama2

using System;
					
public class Program
{
	public static void Main()
	{
           
            string z;
		    char decision;
            do
            {
				 Console.WriteLine("                                 TABLE OF CONTENTS               ");
            Console.WriteLine(" Input name and information ----------------------------------------------- 1");
            Console.WriteLine(" Add of two numbers-------------------------------------------------------- 2");
            Console.WriteLine(" Find square integer------------------------------------------------------- 3");
            Console.WriteLine(" print name---------------------------------------------------------------- 4");
            Console.WriteLine(" Are and Perimeter of Rectangle-------------------------------------------- 5");
            Console.WriteLine(" Perimeter of Circle using Radius------------------------------------------ 6");
            Console.WriteLine(" Compute their sum, difference, product and quotient----------------------- 7");
            Console.WriteLine(" Calculates the total salary----------------------------------------------- 8");    
            Console.WriteLine(" Calculates the total salary for an employee Work hours ------------------- 9");
            Console.WriteLine(" Determine whether a student has Passed or Failed------------------------- 10");
            Console.WriteLine(" Convert the length in feet to centimeter--------------------------------- 11");
            Console.WriteLine(" Read the two sides of a rectangle and calculate area--------------------- 12");
            Console.WriteLine(" Enter A and B and determine which is greater----------------------------- 13");
            Console.WriteLine(" Print largest value and print the largest value-------------------------- 14");
            Console.WriteLine(" Enter three values and print largest value------------------------------- 15");
            Console.WriteLine(" Print Which Day from Given Value ( If else)------------------------------ 16");
            Console.WriteLine(" Print Which Day from Given Value (switch case)--------------------------- 17");
            Console.WriteLine(" Enter Type of Operation & Calculate Two Numbers (if-else)---------------- 18");
            Console.WriteLine(" Enter Type of Operation & Calculate Two Numbers (switch)----------------- 19");
            Console.WriteLine(" Print a Value if Positive, Negative, or Zero (if-else)------------------- 20");
            Console.WriteLine(" Enter Letter is Uppercase or Lowercase----------------------------------- 21");
            Console.WriteLine(" The sum of the 5 natural numbers----------------------------------------- 22");
            Console.WriteLine(" The product of 5 multiplied by 1-5 (while loop)-------------------------- 23");
            Console.WriteLine("");
            Console.WriteLine("======================================================================================");
            Console.Write("Enter Activity Number: ");
                z = Convert.ToString(Console.ReadLine());
                Console.WriteLine("");

                switch (z)
                {
                    case "1":
                        //Console.WriteLine("Activity number 1");
                        John();
                        break;
                    case "2":
                        //Console.WriteLine("Activity number 2");
                        John2();
                        break;
                    case "3":
                        //Console.WriteLine("Activity number 3");
                        John3();
                        break;
                    case "4":
                        //Console.WriteLine("Activity number 4");
                        John4();
                        break;
                    case "5":
                        //Console.WriteLine("Activity number 5");
                        John5();
                        break;
                    case "6":
                        //Console.WriteLine("Activity number 6");
                        John6();
                        break;
                    case "7":
                        //Console.WriteLine("Activity number 7");
                        John7();
                        break;
                    case "8":
                        //Console.WriteLine("Activity number 8");
                        John8();
                        break;
                    case "9":
                        //Console.WriteLine("Activity number 9");
                        John9();
                        break;
                    case "10":
                        //Console.WriteLine("Activity number 10");
                        John10();
                        break;
                    case "11":
                        //Console.WriteLine("Activity number 11");
                        John11();
                        break;
                    case "12":
                        //Console.WriteLine("Activity number 12");
                        John12();
                        break;
                    case "13":
                        //Console.WriteLine("Activity number 13");
                        John13();
                        break;
                    case "14":
                        //Console.WriteLine("Compilation number 14");
                        John14();
                        break;
                    case "15":
                        //Console.WriteLine("Compilation number 15");
                        John15();
                        break;
                    case "16":
                        //Console.WriteLine("Activity number 16");
                        John16();
                        break;
                    case "17":
                        //Console.WriteLine("Activity number 17");
                        John17();
                        break;
                    case "18":
                        //Console.WriteLine("Activity number 18");
                        John18();
                        break;
                    case "19":
                        //Console.WriteLine("Activity number 19");
                        John19();
                        break;
                    case "20":
                        //Console.WriteLine("Activity number 20");
                        John20();
                        break;
                    case "21":
                        //Console.WriteLine("Activity number 21");
                        John21();
                        break;
                    case "22":
                        //Console.WriteLine("Activity number 22");
                        John22();
                        break;
                    case "23":
                        //Console.WriteLine("Activity number 23");
                        John23();
                        break;
                    default:
                        Console.WriteLine("Invalid input");
                        break;
                }
				Console.Write("Would you like to continue Y/N: ");
				decision = Convert.ToChar(Console.ReadLine());
				Console.WriteLine("");
				if (decision == 'Y')
		       {
			       Console.Write("Enter Activity number: ");
		       }
            }while(decision == 'Y');
        }//Main method bracket;	
        //MEthods	
        public static void John()
        {
            Console.WriteLine("Activity #1 Input name and information\"");
            Console.WriteLine("John/ Jemuel/ Gabriel  ");
            Console.WriteLine(" 4/ 18 / 18  ");
            Console.WriteLine(" Talisay City, Cebu ");
            Console.WriteLine("Playing video games / Girls/ Men ");
            Console.WriteLine("Practice makes excelent, because you can never be perfect but you can be excellent in the things that you are doing ");
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John2()
        {
            Console.WriteLine("Activity #2 Flowchart for Addition of two numbers");
            int num1, num2, result;
            Console.Write("Enter First number: ");
            num1 = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter Second Number: ");
            num2 = Convert.ToInt32(Console.ReadLine());
            result = num1 + num2;
            Console.WriteLine("The sum of two numbers is: " + result);
            Console.WriteLine("");
           // Decisionstructure();
        }
        public static void John3()
        {
            Console.WriteLine("Activity #3. Flowchart to find square of an integer number ");
            int num1, result;
            Console.Write("Enter First number: ");
            num1 = Convert.ToInt32(Console.ReadLine());
            result = (num1 * num1);
            Console.WriteLine("The square Value is : " + result);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John4()
        {
           // Console.WriteLine("Activity #4. Read and print a string name");
            string name1;
            Console.Write("Enter  your name: ");
            name1 = Convert.ToString(Console.ReadLine());
            Console.WriteLine("your name is: " + name1);
           Console.WriteLine("");
            //Console.WriteLine("If you want to try again. just enter compilation number");
        }
        public static void John5()
        {
            Console.WriteLine("Activity #5 Calculate Are and Perimeter of Rectangle");
            int num1, num2, area, result;
            Console.Write("Enter Value of length: ");
            num1 = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter Value of Width: ");
            num2 = Convert.ToInt32(Console.ReadLine());
            area = num1 * num2;
            result = (num1 + num2) * 2;
            Console.WriteLine("The area is: " + area);
            Console.WriteLine("The Perimeter of Square is: " + result);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John6()
        {
            Console.WriteLine("Activity #6. Find Perimeter of Circle using Radius (pi = 3.14)");
            double radius, perimeter;
            Console.Write("Enter The Radius Value: ");
            radius = Convert.ToDouble(Console.ReadLine());
            perimeter = (2 * 3.14) * radius;
            Console.WriteLine("The perimeter of circle is: " + perimeter);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John7()
        {
           Console.WriteLine("Activity #7. Input any two numbers, compute their sum, difference, product and quotient");
            double num1, num2, Sum, Diff, Pro, Qou;
            Console.Write("Enter First number value: ");
            num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second number Value: ");
            num2 = Convert.ToDouble(Console.ReadLine());
            Sum = num1 + num2;
            Diff = num1 - num2;
            Pro = num1 * num2;
            Qou = num1 / num2;
            Console.WriteLine("The Sum of the two number is: " + Sum);
            Console.WriteLine("The Difference of the two number is: " + Diff);
            Console.WriteLine("The Product of the two number is: " + Pro);
            Console.WriteLine("The Product of the two number is: " + Qou);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John8()
        {
            Console.WriteLine("Activity #8 Calculates the total salary for an employee");

            Double AVS, HO, WHAD, SPH, HL; //input variable      /AVS=AVERAGESALARY / HO=HOURSOVERTIME / WHAD=WORKHOURSADAY / SPH=SALARYPERHOUR / HL=HOURSLATE / 
            int DOW; //input variable                            /DOW=DAYSYOUVWWORKWED /   
            Double TSAM, TOTS, HLD, OTS;                        //TSAM=TOTALSALARYAMONTH / TOTS=TOTALOVERTIMESALARY / HLD=HOURSLATEDEDUCTION / OTS=OVERALLTOTALSALARY / 
            Console.Write("Enter average salary:");
            AVS = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Days you've work in a month: ");
            DOW = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter overtime Hours: ");
            HO = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter AVERAGE Work Hours in a day: ");
            WHAD = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Hours of late in work: ");
            HL = Convert.ToDouble(Console.ReadLine());
            TSAM = (AVS * DOW);
            TOTS = (AVS / DOW) * HO;
            SPH = (AVS / DOW);
            HLD = (HL * SPH);
            OTS = (TSAM + TOTS) - HLD;
            Console.WriteLine("Your Average salary is: " + AVS);
            Console.WriteLine("Your days of work is; " + DOW);
            Console.WriteLine("Your OVERTIME hours is : " + HO);
            Console.WriteLine("Your working hours in a day is: " + WHAD);
            Console.WriteLine("Your Salary per hour is: " + SPH);
            Console.WriteLine("Your total salary a month is; " + TSAM);
            Console.WriteLine("Your TOTAL OVERTIME SALARY is: " + TOTS);
            Console.WriteLine("Your Hours late Deduction is: " + HLD);
            Console.WriteLine("Your OVERALL SALARY is: " + OTS);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John9()
        {
            Console.WriteLine("Activity #9 Program that calculates the total salary for an employee using this equation ");
            int Sal;
            int OT;
            int TotalSal;
            Console.Write("Enter the Salary: ");
            Sal = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter the Overtime Rendered: ");
            OT = Convert.ToInt32(Console.ReadLine());
            TotalSal = Sal + OT;
            Console.WriteLine("The Total Salary is: {0}", TotalSal);

           Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John10()
        {
           Console.WriteLine("Activity #10 Determine whether a student has Passed or Failed");
            double M1, M2, M3, M4, Average;
            Console.Write("Enter First Grade: ");
            M1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second Grade: ");
            M2 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Third Grade: ");
            M3 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Fourth Grade: ");
            M4 = Convert.ToDouble(Console.ReadLine());
            Average = (M1 + M2 + M3 + M4) / 4;
            Console.WriteLine("The Average is: " + Average);
            if (Average > 75)
            {
                Console.WriteLine("Congratulations! You Passed!");
            }
            else
            {
                Console.WriteLine("Sorry, you Failed. Try again next time. Mag-aral ka kasi");
            }
            
        }
        public static void John11()
        {
            Console.WriteLine("Activity #11 Convert the length in feet to centimeter");
            double L, LCM;
            Console.Write("Enter Length: ");
            L = Convert.ToDouble(Console.ReadLine());
            LCM = L * 30;
            Console.WriteLine("The Length in centimeters is: " + LCM);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John12()
        {
            Console.WriteLine("Activity #12 Read the two sides of a rectangle and calculate area");
            double L, W, A;              // L = Length / W = Width / A= Area 
            Console.Write("Enter Length: ");
            L = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Width: ");
            W = Convert.ToDouble(Console.ReadLine());
            A = L * W;
            Console.WriteLine("The AREA of the given is: " + A);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John13()
        {
            Console.WriteLine("Activity #13 Enter A and B and determine which is greater");
            Double A, B;
            Console.Write("Enter First number: ");
            A = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second number: ");
            B = Convert.ToDouble(Console.ReadLine());
            if (A > B)
            {
                Console.WriteLine("The First number is Greater than The second number");
                Console.ReadLine();
            }
            else if (A == B)
            {
                Console.WriteLine("THe First and Second number is the same");
            }
            else
            {
                Console.WriteLine("The Second number is Greater Than The First one");
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John14()
        {
			Console.WriteLine("Activity #14 Print largest value and print the largest value");
            Double Num1, Num2;
            Console.Write("Enter First number: ");
            Num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second number: ");
            Num2 = Convert.ToDouble(Console.ReadLine());
            if (Num1 > Num2)
            {
                Console.WriteLine(Num1);
                Console.ReadLine();
            }
            else if (Num1 == Num2)
            {
                Console.WriteLine("The Value you input is the same");
            }
            else
            {
                Console.WriteLine(Num2);
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John15()
        {
            Console.WriteLine("Activity #15 Enter three values and print largest value");
            Console.WriteLine("Input n1, n2, n3;");
            Double Num1, Num2, Num3;
            Console.Write("Enter First number: ");
            Num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second number: ");
            Num2 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Third number: ");
            Num3 = Convert.ToDouble(Console.ReadLine());
            if (Num1 >= Num2 && Num1 >= Num3)
            {
                Console.WriteLine("The biggest is the first number");
            }
            else if (Num2 >= Num1 && Num2 >= Num3)
            {
                Console.WriteLine("The Biggest is the Second number");
            }
            else
            {
                Console.WriteLine("The Biggest is the Third number");
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John16()
        {
           Console.WriteLine("Activity #16 Print Which Day from Given Value ( If else)");
            Console.Write("Enter number to display days");
            char num;
            num = Convert.ToChar(Console.ReadLine());
            switch (num)
            {
                case '1':
                    Console.WriteLine("Monday");
                    break;
                case '2':
                    Console.WriteLine("Tuesday");
                    break;
                case '3':
                    Console.WriteLine("Wednesday");
                    break;
                case '4':
                    Console.WriteLine("Thursday");
                    break;
                case '5':
                    Console.WriteLine("Friday");
                    break;
                case '6':
                    Console.WriteLine("Saturday");
                    break;
                case '7':
                    Console.WriteLine("Sunday");
                    break;
                default:
                    Console.WriteLine("Invalid input");
                    break;
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John17()
        {
            Console.WriteLine("activity #17 Print Which Day from Given Value (switch case)");
            char num;
            Console.Write("Enter number to display days: ");
            num = Convert.ToChar(Console.ReadLine());
            if (num == '1')
            {
                Console.WriteLine("Monday");
            }
            else if (num == '2')
            {
                Console.WriteLine("Tuesday");
            }
            else if (num == '3')
            {
                Console.WriteLine("Wednesday");
            }
            else if (num == '4')
            {
                Console.WriteLine("Thursday");
            }
            else if (num == '5')
            {
                Console.WriteLine("Friday");
            }
            else if (num == '6')
            {
                Console.WriteLine("Saturday");
            }
            else if (num == '7')
            {
                Console.WriteLine("Sunday");
            }
            else
            {
                Console.WriteLine("Invalid input");
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John18()
        {
            Console.WriteLine("Activity #18 Enter Type of Operation & Calculate Two Numbers (if-else)");
            char OP;
            double result, num1, num2;
            Console.Write("Enter First number: ");
            num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Operator: ");
            OP = Convert.ToChar(Console.ReadLine());
            Console.Write("Enter Second number ");
            num2 = Convert.ToDouble(Console.ReadLine());
            if (OP == '+')
            {
                result = num1 + num2;
                Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
            }
            else if (OP == '-')
            {
                result = num1 - num2;
                Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
            }
            else if (OP == '*')
            {
                result = num1 * num2;
                Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
            }
            else if (OP == '/')
            {
                result = num1 / num2;
                Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
            }
            else
            {
                Console.WriteLine("Invalid OP");
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John19()
        {
            Console.WriteLine("Activity #19 Enter Type of Operation & Calculate Two Numbers (switch)");
            char OP;
            double result, num1, num2;
            Console.Write("Enter First number: ");
            num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Operator: ");
            OP = Convert.ToChar(Console.ReadLine());
            Console.Write("Enter Second number ");
            num2 = Convert.ToDouble(Console.ReadLine());
            switch (OP)
            {
                case '+':
                    result = num1 + num2;
                    Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
                    break;
                case '-':
                    result = num1 - num2;
                    Console.WriteLine("" + num1 + "-" + num2 + "=" + result);
                    break;
                case '*':
                    result = num1 * num2;
                    Console.WriteLine("" + num1 + "*" + num2 + "=" + result);
                    break;
                case '/':
                    result = num1 / num2;
                    Console.WriteLine("" + num1 + "/" + num2 + "=" + result);
                    break;
                default:
                    Console.WriteLine("Invalid input");
                    break;
            }
            Console.WriteLine("");
            //Decisionstructure();

        }
        public static void John20()
        {
            Console.WriteLine("Activity #20 Print a Value if Positive, Negative, or Zero (if-else)");
            int num;
            Console.Write("Enter Number: ");
            num = Convert.ToInt32(Console.ReadLine());

            if (num >= 1)
            {
                Console.WriteLine(num + " is Greater than 0");
            }
            else if (num < 0)
            {
                Console.WriteLine("The number you input is Negative: " + num);
            }
            else
            {
                Console.WriteLine("The number you input is zero: " + num); ;
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John21()
        {
            Console.WriteLine("Activity #21 Enter Letter is Uppercase or Lowercase");
            for (int z = 1; z < 3; z++)
            {
                char ch;
                Console.Write("Enter  any Character: ");
                ch = Convert.ToChar(Console.ReadLine());

                switch (ch >= 'a' && ch <= 'z')
                {
                    case 'a' >= 'z' && 'a' <= 'z':
                        Console.WriteLine(ch + " is an UPPERCASE alphabet ");

                        break;
                    case 'A' <= 'Z' && 'A' <= 'Z':
                        Console.WriteLine(ch + " is lowercase alphabet");
                        break;
                    /*case 'A' >= 'Z':
                        Console.WriteLine(ch + " is lowercase alphabet");
                        break;
                    case 'A' <= 'Z':
                        Console.WriteLine(ch + " is lowercase alphabet");
                        break;*/
                    default:
                        Console.WriteLine(ch + " is not an alphabet");
                        break;
                }
                /*switch (ch >= 'A' && ch <= 'Z' )
                {
                    case 'A' >= 'Z':
                        Console.WriteLine(ch + " is an UPPERCASE alphabet ");

                       break;
                    case 'A' <= 'Z' != 'A' >= 'Z':
                         Console.WriteLine(ch + " is lowercase alphabet");
                        break;	
                }*/

                /*if (ch >= 'a' && ch <= 'z')
                {
                    Console.WriteLine(ch + " is lowercase alphabet");
                    Console.WriteLine("");
                }
                else if (ch >= 'A' && ch <= 'Z') 
                {
                    Console.WriteLine(ch + " Is UPPER CASe alphabet");
                    Console.WriteLine("");
                }else
                {
                    Console.WriteLine(ch + " is not an alphabet");
                    Console.WriteLine("");

                }*/

            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John22()
        {
			Console.WriteLine("Activity #22 The sum of the 5 natural numbers");
            int sum;
            int result;
            sum = 0;
            for (int i = 1; i <= 5; i++)
            {
                result = sum + i;
                sum = result;
            }
            Console.WriteLine("the sum of the 5 natural numbers is: {0}", sum);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John23()
        {   
			Console.WriteLine("Activity #23 The product of 5 multiplied by 1-5 (while loop)");
            int prod;
            int x;
            x = 1;
            prod = 0;
            while (x <= 5)
            {
                prod = 5 * x;
                Console.WriteLine("5 * {0} = {1}", x, prod);
                x++;
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void Decisionstructure()
        {
         
        {
	  }		
	}
}

​x
 
using System;
                    
public class Program
{
    public static void Main()
    {
           
            string z;
            char decision;
            do
            {
                 Console.WriteLine("                                 TABLE OF CONTENTS               ");
            Console.WriteLine(" Input name and information ----------------------------------------------- 1");
            Console.WriteLine(" Add of two numbers-------------------------------------------------------- 2");
            Console.WriteLine(" Find square integer------------------------------------------------------- 3");
            Console.WriteLine(" print name---------------------------------------------------------------- 4");
            Console.WriteLine(" Are and Perimeter of Rectangle-------------------------------------------- 5");
            Console.WriteLine(" Perimeter of Circle using Radius------------------------------------------ 6");
            Console.WriteLine(" Compute their sum, difference, product and quotient----------------------- 7");
            Console.WriteLine(" Calculates the total salary----------------------------------------------- 8");    
            Console.WriteLine(" Calculates the total salary for an employee Work hours ------------------- 9");
            Console.WriteLine(" Determine whether a student has Passed or Failed------------------------- 10");
            Console.WriteLine(" Convert the length in feet to centimeter--------------------------------- 11");
            Console.WriteLine(" Read the two sides of a rectangle and calculate area--------------------- 12");
            Console.WriteLine(" Enter A and B and determine which is greater----------------------------- 13");
            Console.WriteLine(" Print largest value and print the largest value-------------------------- 14");
            Console.WriteLine(" Enter three values and print largest value------------------------------- 15");
            Console.WriteLine(" Print Which Day from Given Value ( If else)------------------------------ 16");
            Console.WriteLine(" Print Which Day from Given Value (switch case)--------------------------- 17");
            Console.WriteLine(" Enter Type of Operation & Calculate Two Numbers (if-else)---------------- 18");
            Console.WriteLine(" Enter Type of Operation & Calculate Two Numbers (switch)----------------- 19");
            Console.WriteLine(" Print a Value if Positive, Negative, or Zero (if-else)------------------- 20");
            Console.WriteLine(" Enter Letter is Uppercase or Lowercase----------------------------------- 21");
            Console.WriteLine(" The sum of the 5 natural numbers----------------------------------------- 22");
            Console.WriteLine(" The product of 5 multiplied by 1-5 (while loop)-------------------------- 23");
            Console.WriteLine("");
            Console.WriteLine("======================================================================================");
            Console.Write("Enter Activity Number: ");
                z = Convert.ToString(Console.ReadLine());
                Console.WriteLine("");
​
                switch (z)
                {
                    case "1":
                        //Console.WriteLine("Activity number 1");
                        John();
                        break;
                    case "2":
                        //Console.WriteLine("Activity number 2");
                        John2();
                        break;
                    case "3":
                        //Console.WriteLine("Activity number 3");
                        John3();
                        break;
                    case "4":
                        //Console.WriteLine("Activity number 4");
                        John4();
                        break;
                    case "5":
                        //Console.WriteLine("Activity number 5");
                        John5();
                        break;
                    case "6":
                        //Console.WriteLine("Activity number 6");
                        John6();
                        break;
                    case "7":
                        //Console.WriteLine("Activity number 7");
                        John7();
                        break;
                    case "8":
                        //Console.WriteLine("Activity number 8");
                        John8();
                        break;
                    case "9":
                        //Console.WriteLine("Activity number 9");
                        John9();
                        break;
                    case "10":
                        //Console.WriteLine("Activity number 10");
                        John10();
                        break;
                    case "11":
                        //Console.WriteLine("Activity number 11");
                        John11();
                        break;
                    case "12":
                        //Console.WriteLine("Activity number 12");
                        John12();
                        break;
                    case "13":
                        //Console.WriteLine("Activity number 13");
                        John13();
                        break;
                    case "14":
                        //Console.WriteLine("Compilation number 14");
                        John14();
                        break;
                    case "15":
                        //Console.WriteLine("Compilation number 15");
                        John15();
                        break;
                    case "16":
                        //Console.WriteLine("Activity number 16");
                        John16();
                        break;
                    case "17":
                        //Console.WriteLine("Activity number 17");
                        John17();
                        break;
                    case "18":
                        //Console.WriteLine("Activity number 18");
                        John18();
                        break;
                    case "19":
                        //Console.WriteLine("Activity number 19");
                        John19();
                        break;
                    case "20":
                        //Console.WriteLine("Activity number 20");
                        John20();
                        break;
                    case "21":
                        //Console.WriteLine("Activity number 21");
                        John21();
                        break;
                    case "22":
                        //Console.WriteLine("Activity number 22");
                        John22();
                        break;
                    case "23":
                        //Console.WriteLine("Activity number 23");
                        John23();
                        break;
                    default:
                        Console.WriteLine("Invalid input");
                        break;
                }
                Console.Write("Would you like to continue Y/N: ");
                decision = Convert.ToChar(Console.ReadLine());
                Console.WriteLine("");
                if (decision == 'Y')
               {
                   Console.Write("Enter Activity number: ");
               }
            }while(decision == 'Y');
        }//Main method bracket; 
        //MEthods   
        public static void John()
        {
            Console.WriteLine("Activity #1 Input name and information\"");
            Console.WriteLine("John/ Jemuel/ Gabriel  ");
            Console.WriteLine(" 4/ 18 / 18  ");
            Console.WriteLine(" Talisay City, Cebu ");
            Console.WriteLine("Playing video games / Girls/ Men ");
            Console.WriteLine("Practice makes excelent, because you can never be perfect but you can be excellent in the things that you are doing ");
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John2()
        {
            Console.WriteLine("Activity #2 Flowchart for Addition of two numbers");
            int num1, num2, result;
            Console.Write("Enter First number: ");
            num1 = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter Second Number: ");
            num2 = Convert.ToInt32(Console.ReadLine());
            result = num1 + num2;
            Console.WriteLine("The sum of two numbers is: " + result);
            Console.WriteLine("");
           // Decisionstructure();
        }
        public static void John3()
        {
            Console.WriteLine("Activity #3. Flowchart to find square of an integer number ");
            int num1, result;
            Console.Write("Enter First number: ");
            num1 = Convert.ToInt32(Console.ReadLine());
            result = (num1 * num1);
            Console.WriteLine("The square Value is : " + result);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John4()
        {
           // Console.WriteLine("Activity #4. Read and print a string name");
            string name1;
            Console.Write("Enter  your name: ");
            name1 = Convert.ToString(Console.ReadLine());
            Console.WriteLine("your name is: " + name1);
           Console.WriteLine("");
            //Console.WriteLine("If you want to try again. just enter compilation number");
        }
        public static void John5()
        {
            Console.WriteLine("Activity #5 Calculate Are and Perimeter of Rectangle");
            int num1, num2, area, result;
            Console.Write("Enter Value of length: ");
            num1 = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter Value of Width: ");
            num2 = Convert.ToInt32(Console.ReadLine());
            area = num1 * num2;
            result = (num1 + num2) * 2;
            Console.WriteLine("The area is: " + area);
            Console.WriteLine("The Perimeter of Square is: " + result);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John6()
        {
            Console.WriteLine("Activity #6. Find Perimeter of Circle using Radius (pi = 3.14)");
            double radius, perimeter;
            Console.Write("Enter The Radius Value: ");
            radius = Convert.ToDouble(Console.ReadLine());
            perimeter = (2 * 3.14) * radius;
            Console.WriteLine("The perimeter of circle is: " + perimeter);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John7()
        {
           Console.WriteLine("Activity #7. Input any two numbers, compute their sum, difference, product and quotient");
            double num1, num2, Sum, Diff, Pro, Qou;
            Console.Write("Enter First number value: ");
            num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second number Value: ");
            num2 = Convert.ToDouble(Console.ReadLine());
            Sum = num1 + num2;
            Diff = num1 - num2;
            Pro = num1 * num2;
            Qou = num1 / num2;
            Console.WriteLine("The Sum of the two number is: " + Sum);
            Console.WriteLine("The Difference of the two number is: " + Diff);
            Console.WriteLine("The Product of the two number is: " + Pro);
            Console.WriteLine("The Product of the two number is: " + Qou);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John8()
        {
            Console.WriteLine("Activity #8 Calculates the total salary for an employee");
​
            Double AVS, HO, WHAD, SPH, HL; //input variable      /AVS=AVERAGESALARY / HO=HOURSOVERTIME / WHAD=WORKHOURSADAY / SPH=SALARYPERHOUR / HL=HOURSLATE / 
            int DOW; //input variable                            /DOW=DAYSYOUVWWORKWED /   
            Double TSAM, TOTS, HLD, OTS;                        //TSAM=TOTALSALARYAMONTH / TOTS=TOTALOVERTIMESALARY / HLD=HOURSLATEDEDUCTION / OTS=OVERALLTOTALSALARY / 
            Console.Write("Enter average salary:");
            AVS = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Days you've work in a month: ");
            DOW = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter overtime Hours: ");
            HO = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter AVERAGE Work Hours in a day: ");
            WHAD = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Hours of late in work: ");
            HL = Convert.ToDouble(Console.ReadLine());
            TSAM = (AVS * DOW);
            TOTS = (AVS / DOW) * HO;
            SPH = (AVS / DOW);
            HLD = (HL * SPH);
            OTS = (TSAM + TOTS) - HLD;
            Console.WriteLine("Your Average salary is: " + AVS);
            Console.WriteLine("Your days of work is; " + DOW);
            Console.WriteLine("Your OVERTIME hours is : " + HO);
            Console.WriteLine("Your working hours in a day is: " + WHAD);
            Console.WriteLine("Your Salary per hour is: " + SPH);
            Console.WriteLine("Your total salary a month is; " + TSAM);
            Console.WriteLine("Your TOTAL OVERTIME SALARY is: " + TOTS);
            Console.WriteLine("Your Hours late Deduction is: " + HLD);
            Console.WriteLine("Your OVERALL SALARY is: " + OTS);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John9()
        {
            Console.WriteLine("Activity #9 Program that calculates the total salary for an employee using this equation ");
            int Sal;
            int OT;
            int TotalSal;
            Console.Write("Enter the Salary: ");
            Sal = Convert.ToInt32(Console.ReadLine());
            Console.Write("Enter the Overtime Rendered: ");
            OT = Convert.ToInt32(Console.ReadLine());
            TotalSal = Sal + OT;
            Console.WriteLine("The Total Salary is: {0}", TotalSal);
​
           Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John10()
        {
           Console.WriteLine("Activity #10 Determine whether a student has Passed or Failed");
            double M1, M2, M3, M4, Average;
            Console.Write("Enter First Grade: ");
            M1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second Grade: ");
            M2 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Third Grade: ");
            M3 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Fourth Grade: ");
            M4 = Convert.ToDouble(Console.ReadLine());
            Average = (M1 + M2 + M3 + M4) / 4;
            Console.WriteLine("The Average is: " + Average);
            if (Average > 75)
            {
                Console.WriteLine("Congratulations! You Passed!");
            }
            else
            {
                Console.WriteLine("Sorry, you Failed. Try again next time. Mag-aral ka kasi");
            }
            
        }
        public static void John11()
        {
            Console.WriteLine("Activity #11 Convert the length in feet to centimeter");
            double L, LCM;
            Console.Write("Enter Length: ");
            L = Convert.ToDouble(Console.ReadLine());
            LCM = L * 30;
            Console.WriteLine("The Length in centimeters is: " + LCM);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John12()
        {
            Console.WriteLine("Activity #12 Read the two sides of a rectangle and calculate area");
            double L, W, A;              // L = Length / W = Width / A= Area 
            Console.Write("Enter Length: ");
            L = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Width: ");
            W = Convert.ToDouble(Console.ReadLine());
            A = L * W;
            Console.WriteLine("The AREA of the given is: " + A);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John13()
        {
            Console.WriteLine("Activity #13 Enter A and B and determine which is greater");
            Double A, B;
            Console.Write("Enter First number: ");
            A = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second number: ");
            B = Convert.ToDouble(Console.ReadLine());
            if (A > B)
            {
                Console.WriteLine("The First number is Greater than The second number");
                Console.ReadLine();
            }
            else if (A == B)
            {
                Console.WriteLine("THe First and Second number is the same");
            }
            else
            {
                Console.WriteLine("The Second number is Greater Than The First one");
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John14()
        {
            Console.WriteLine("Activity #14 Print largest value and print the largest value");
            Double Num1, Num2;
            Console.Write("Enter First number: ");
            Num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second number: ");
            Num2 = Convert.ToDouble(Console.ReadLine());
            if (Num1 > Num2)
            {
                Console.WriteLine(Num1);
                Console.ReadLine();
            }
            else if (Num1 == Num2)
            {
                Console.WriteLine("The Value you input is the same");
            }
            else
            {
                Console.WriteLine(Num2);
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John15()
        {
            Console.WriteLine("Activity #15 Enter three values and print largest value");
            Console.WriteLine("Input n1, n2, n3;");
            Double Num1, Num2, Num3;
            Console.Write("Enter First number: ");
            Num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Second number: ");
            Num2 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Third number: ");
            Num3 = Convert.ToDouble(Console.ReadLine());
            if (Num1 >= Num2 && Num1 >= Num3)
            {
                Console.WriteLine("The biggest is the first number");
            }
            else if (Num2 >= Num1 && Num2 >= Num3)
            {
                Console.WriteLine("The Biggest is the Second number");
            }
            else
            {
                Console.WriteLine("The Biggest is the Third number");
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John16()
        {
           Console.WriteLine("Activity #16 Print Which Day from Given Value ( If else)");
            Console.Write("Enter number to display days");
            char num;
            num = Convert.ToChar(Console.ReadLine());
            switch (num)
            {
                case '1':
                    Console.WriteLine("Monday");
                    break;
                case '2':
                    Console.WriteLine("Tuesday");
                    break;
                case '3':
                    Console.WriteLine("Wednesday");
                    break;
                case '4':
                    Console.WriteLine("Thursday");
                    break;
                case '5':
                    Console.WriteLine("Friday");
                    break;
                case '6':
                    Console.WriteLine("Saturday");
                    break;
                case '7':
                    Console.WriteLine("Sunday");
                    break;
                default:
                    Console.WriteLine("Invalid input");
                    break;
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John17()
        {
            Console.WriteLine("activity #17 Print Which Day from Given Value (switch case)");
            char num;
            Console.Write("Enter number to display days: ");
            num = Convert.ToChar(Console.ReadLine());
            if (num == '1')
            {
                Console.WriteLine("Monday");
            }
            else if (num == '2')
            {
                Console.WriteLine("Tuesday");
            }
            else if (num == '3')
            {
                Console.WriteLine("Wednesday");
            }
            else if (num == '4')
            {
                Console.WriteLine("Thursday");
            }
            else if (num == '5')
            {
                Console.WriteLine("Friday");
            }
            else if (num == '6')
            {
                Console.WriteLine("Saturday");
            }
            else if (num == '7')
            {
                Console.WriteLine("Sunday");
            }
            else
            {
                Console.WriteLine("Invalid input");
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John18()
        {
            Console.WriteLine("Activity #18 Enter Type of Operation & Calculate Two Numbers (if-else)");
            char OP;
            double result, num1, num2;
            Console.Write("Enter First number: ");
            num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Operator: ");
            OP = Convert.ToChar(Console.ReadLine());
            Console.Write("Enter Second number ");
            num2 = Convert.ToDouble(Console.ReadLine());
            if (OP == '+')
            {
                result = num1 + num2;
                Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
            }
            else if (OP == '-')
            {
                result = num1 - num2;
                Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
            }
            else if (OP == '*')
            {
                result = num1 * num2;
                Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
            }
            else if (OP == '/')
            {
                result = num1 / num2;
                Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
            }
            else
            {
                Console.WriteLine("Invalid OP");
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John19()
        {
            Console.WriteLine("Activity #19 Enter Type of Operation & Calculate Two Numbers (switch)");
            char OP;
            double result, num1, num2;
            Console.Write("Enter First number: ");
            num1 = Convert.ToDouble(Console.ReadLine());
            Console.Write("Enter Operator: ");
            OP = Convert.ToChar(Console.ReadLine());
            Console.Write("Enter Second number ");
            num2 = Convert.ToDouble(Console.ReadLine());
            switch (OP)
            {
                case '+':
                    result = num1 + num2;
                    Console.WriteLine("" + num1 + "+" + num2 + "=" + result);
                    break;
                case '-':
                    result = num1 - num2;
                    Console.WriteLine("" + num1 + "-" + num2 + "=" + result);
                    break;
                case '*':
                    result = num1 * num2;
                    Console.WriteLine("" + num1 + "*" + num2 + "=" + result);
                    break;
                case '/':
                    result = num1 / num2;
                    Console.WriteLine("" + num1 + "/" + num2 + "=" + result);
                    break;
                default:
                    Console.WriteLine("Invalid input");
                    break;
            }
            Console.WriteLine("");
            //Decisionstructure();
​
        }
        public static void John20()
        {
            Console.WriteLine("Activity #20 Print a Value if Positive, Negative, or Zero (if-else)");
            int num;
            Console.Write("Enter Number: ");
            num = Convert.ToInt32(Console.ReadLine());
​
            if (num >= 1)
            {
                Console.WriteLine(num + " is Greater than 0");
            }
            else if (num < 0)
            {
                Console.WriteLine("The number you input is Negative: " + num);
            }
            else
            {
                Console.WriteLine("The number you input is zero: " + num); ;
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John21()
        {
            Console.WriteLine("Activity #21 Enter Letter is Uppercase or Lowercase");
            for (int z = 1; z < 3; z++)
            {
                char ch;
                Console.Write("Enter  any Character: ");
                ch = Convert.ToChar(Console.ReadLine());
​
                switch (ch >= 'a' && ch <= 'z')
                {
                    case 'a' >= 'z' && 'a' <= 'z':
                        Console.WriteLine(ch + " is an UPPERCASE alphabet ");
​
                        break;
                    case 'A' <= 'Z' && 'A' <= 'Z':
                        Console.WriteLine(ch + " is lowercase alphabet");
                        break;
                    /*case 'A' >= 'Z':
                        Console.WriteLine(ch + " is lowercase alphabet");
                        break;
                    case 'A' <= 'Z':
                        Console.WriteLine(ch + " is lowercase alphabet");
                        break;*/
                    default:
                        Console.WriteLine(ch + " is not an alphabet");
                        break;
                }
                /*switch (ch >= 'A' && ch <= 'Z' )
                {
                    case 'A' >= 'Z':
                        Console.WriteLine(ch + " is an UPPERCASE alphabet ");
​
                       break;
                    case 'A' <= 'Z' != 'A' >= 'Z':
                         Console.WriteLine(ch + " is lowercase alphabet");
                        break;  
                }*/
​
                /*if (ch >= 'a' && ch <= 'z')
                {
                    Console.WriteLine(ch + " is lowercase alphabet");
                    Console.WriteLine("");
                }
                else if (ch >= 'A' && ch <= 'Z') 
                {
                    Console.WriteLine(ch + " Is UPPER CASe alphabet");
                    Console.WriteLine("");
                }else
                {
                    Console.WriteLine(ch + " is not an alphabet");
                    Console.WriteLine("");
​
                }*/
​
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John22()
        {
            Console.WriteLine("Activity #22 The sum of the 5 natural numbers");
            int sum;
            int result;
            sum = 0;
            for (int i = 1; i <= 5; i++)
            {
                result = sum + i;
                sum = result;
            }
            Console.WriteLine("the sum of the 5 natural numbers is: {0}", sum);
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void John23()
        {   
            Console.WriteLine("Activity #23 The product of 5 multiplied by 1-5 (while loop)");
            int prod;
            int x;
            x = 1;
            prod = 0;
            while (x <= 5)
            {
                prod = 5 * x;
                Console.WriteLine("5 * {0} = {1}", x, prod);
                x++;
            }
            Console.WriteLine("");
            //Decisionstructure();
        }
        public static void Decisionstructure()
        {
         
        {
      }     
    }
}
​

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