using System;

public class Program

​

{

    //q1-10

    public static int add(int a,int b)

    { 

        return a+b;

    }

    public static int mul(int a,int b)

    { 

        return a*b;

    }

    public static int avr(int a,int b,int c)

    { 

         int rty=(a+b+c)/3;

        return rty;

    }

    public static void say (String name)

    { 

         Console.WriteLine("Hello"+  name);

    }

    public static void PrintN (int n)

    { 

        Console.WriteLine("Print:"+n);

        Console.WriteLine("--------------");

    }

    public static int mostateelArea (int a,int b)

    { 

        return a*b;

    }

    public static int mostateelmoheet (int a,int b)

    { 

        return (a+b)*2;

    }

    public static double circlearea  (double r)

    { 

        return (r*r)*3.14;

    }

    public static double circlemoheet  (double r)

    { 

        return r*3.14;

    }

    public static string IsEven  (int n)

    { 

        if(n%2==0)

            return "yes";

        else

            return "NO";

    }

    public static void Main()

    {

        Console.Write("please enter a num:");

        int a=int.Parse(Console.ReadLine());

        Console.Write("please enter a num:");

        int b=int.Parse(Console.ReadLine());

        Console.Write("please enter a num:");

        int c=int.Parse(Console.ReadLine());

        int total= add(a,b);

        int result=mul(a,b);

        int avarege=avr(a,b,c);

        Console.WriteLine("avarege:"+ avarege);

        Console.WriteLine("total:"+ total);

        Console.WriteLine("result:"+ result);

        say("aisha");

        for(int i=1;i<=10;i++)

        {

            PrintN(i);

        }

        int total1= mostateelArea(a,b);

            Console.WriteLine("total1:"+ total1);

       int total2=mostateelmoheet(a,b);

        Console.WriteLine("total2:"+ total2);

        double cr= circlearea(a);

        Console.WriteLine("total3:"+ cr);

        double cm= circlemoheet(a);

        Console.WriteLine("total4:"+ cm);

        string m10=IsEven(a);

        Console.WriteLine("is even??:"+ m10);

    }

}