C Program to Swap Two Numbers

To understand this example, you should have the knowledge of the following C programming topics:


Swap Numbers Using Temporary Variable

Output

Enter first number: 1.20
Enter second number: 2.45

After swapping, first number = 2.45
After swapping, second number = 1.20

In the above program, the temp variable is assigned the value of the first variable.

Then, the value of the first variable is assigned to the second variable.

Finally, the temp (which holds the initial value of first) is assigned to second. This completes the swapping process.


Swap Numbers Without Using Temporary Variables

Output

Enter a: 10.25
Enter b: -12.5
After swapping, a = -12.50
After swapping, b = 10.25