using System;

​

    // Complete the missing []

    public class Program

    {

        public static void Main(string[] args)

        {

            double num1 = 100;

            double num2 = 80;

            double avarage = avg(num1,num2);

            Console.WriteLine(avarage);

        }

        public static [RETURN TYPE] avg([FIRST VAR],[SECONED VAR])

        {

            //enter your code here

        }

    }