ExchangeVarableValues

using System;

class ExchangeVarableValues
{
    static void Main(string[] args)
    {
        int A = 5;
        int B = 10;
        int C;
        Console.WriteLine("Before: \n A = {0}; \n B = {1}:",A,B);
        Console.WriteLine("After:\n A = {0};\n B = {1};",B,A);
        C = A;
        A = B;
        B = C;
    }
}