using System;

​

public class Program

{

    public static void Main()

    {

        int a= 2, b = 3, c=4;

        int sum = a + b;

        Console.WriteLine ("a={0}b={1}c={2}a+b+c={3}+{4}+{5}={6}", a,b,c, a,b,c,a+b+c);   

    }

}

​