using System;

public class Program

{

    public static void Main()

    {

        int val1 = 17;

        int val2 = 56787;

        Console.WriteLine("val1 = "+ val1 + ", val2 = "+val2);

        int stock1 = val1;

        int stock2 = val2;

​

        val1 = stock2;

        val2 = stock1;

        Console.WriteLine("val1 = "+ val1 + ", val2 = "+val2);

    }

}