using System;

public class Program

{

    public static void Main()

    {

        //Write a program to ask for and then print your name, date of birth. and mobile number.

        Console.WriteLine("Please enter your name:");

        string name = Console.ReadLine();

        Console.WriteLine("Please enter your date of birth:");

        string dateOfBirth = Console.ReadLine();

        Console.WriteLine("Please enter your mobile number:");

        string mobileNumber = Console.ReadLine();

        Console.WriteLine("Name: " + name + "\nDate of Birth: " + dateOfBirth + "\nMobile Number: " + mobileNumber);

​

        //Write a program ask for 3 letters and print them in reverse.

        Console.WriteLine("Please enter the first letter");

        char firstLetter = Convert.ToChar(Console.ReadLine());

        Console.WriteLine("Please enter the second letter");

        char secondLetter = Convert.ToChar(Console.ReadLine());

        Console.WriteLine("Please enter the third letter");

        char thirdLetter = Convert.ToChar(Console.ReadLine());

        Console.WriteLine(firstLetter.ToString() + secondLetter.ToString()  + thirdLetter.ToString() );

        //Write a program to calculate the perimeter and area of a rectangle.

        Console.WriteLine("Please enter the length of side 1");

        int sideOne= Convert.ToInt16(Console.ReadLine());

        Console.WriteLine("Please enter the length of side 2");

        int sideTwo= Convert.ToInt16(Console.ReadLine());

        Console.WriteLine("Please enter the length of side 3");

        int sideThree= Convert.ToInt16(Console.ReadLine());

        Console.WriteLine("Please enter the length of side 4");

        int sideFour= Convert.ToInt16(Console.ReadLine());

        int perimeter = sideOne+sideTwo+sideThree+sideFour;

        Console.WriteLine("The perimeter of the rectangle is: " + perimeter);

        double area = sideOne*sideTwo;

        Console.WriteLine("The area of the rectangle is :" + area);

        //Write a program that accepts two integers from the user and calculate the sum of the two integers.

        int num1,num2;

        Console.WriteLine("Please enter number 1");

        num1= Convert.ToInt16(Console.ReadLine());

        Console.WriteLine("Please enter number 2");

        num2= Convert.ToInt16(Console.ReadLine());

        int sum = num1+num2;

        Console.WriteLine("The sum of the two numbers : " + num1 + " and " + num2 + " is " + sum);

        //Write a program that accepts two integers from the user and calculate the product of the two integers.

        int number1,number2;

        Console.WriteLine("Please enter number 1");

        number1= Convert.ToInt16(Console.ReadLine());

        Console.WriteLine("Please enter number 2");

        number2= Convert.ToInt16(Console.ReadLine());

        int product = number1*number2;

        Console.WriteLine("The product of the two numbers : " + num1 + " and " + num2 + " is " + sum);

        //Write a program that accepts the weight of two items and prints the average weight.

        int weight1,weight2;

        Console.WriteLine("Please enter the weight of item 1");

        weight1= Convert.ToInt16(Console.ReadLine());

        Console.WriteLine("Please the weight of item 2");

        weight2= Convert.ToInt16(Console.ReadLine());

        double average = (weight1+weight2)/2;

        Console.WriteLine("The average weight of the two items : " + num1 + " and " + num2 + " is " + average);

    }

}