int a = 3;
int b = 5;
Console.WriteLine(“Before Swap”);
Console.WriteLine(“a=” + a);
Console.WriteLine(“b=” + b);
a = a + b;
b = a – b;
a = a – b;
Console.WriteLine(“After Swap”);
Console.WriteLine(“a=” + a);
Console.WriteLine(“b=” + b);
Output
Before Swap
a=3
b=5
After Swap
a=5
b=3