using System;
namespace OppsConcept
{
     class Program
     {
        static void Main(string[] args)
        {
            int A = 5, B = 10;
            Console.WriteLine("Before Swap value of A: " + A);
            Console.WriteLine("Before Swap value of B: " + B);

            B = B - A;
            A = A + B;

            Console.WriteLine("After Swap value of A: " + A);
            Console.WriteLine("After Swap value of B: " + B);

            Console.ReadKey();

        }
     }
}

Before Swap value of A: 5
Before Swap value of B: 10

After Swap value of A: 10
After Swap value of B: 5

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