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C Program to swap two numbers without third variable

We can swap two numbers without using third variable. There are two common ways to swap two numbers without using third variable:

  1. By + and -
  2. By * and /

Program 1: Using + and -

Let's see a simple c example to swap two numbers without using third variable.

Output:

Before swap a=10 b=20
After swap a=20 b=10

Program 2: Using * and /

Let's see another example to swap two numbers using * and /.

Output:

Before swap a=10 b=20
After swap a=20 b=10
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B.Tech / MCA