Simple swapping program in c

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Popular Course in this category. Course Price View Course. Free Software Development Course. Login details for this Free course will be emailed to you. Explore C Examples. C Examples Swap Two Numbers. Find the Size of int, float, double and char. Compute Quotient and Remainder. Multiply Two Floating-Point Numbers. Print an Integer Entered by the User. C "Hello, World!

Calculate Average Using Arrays. Program for swapping three numbers in C is as follows:. Explanation of the above program: The concept for swapping three numbers is the same as two numbers only difference is exchanging numbers. To swap three numbers, first, we initialize three variables i.

With these three numbers, a temporary variable named temp is also initialized to store a number temporarily. Then scan allows the user to assigned numbers according to their wish. First, we transfer the first number to the temp variable and make the first number empty. As the first number is empty, we assigned the second number to the first number and make the second number empty. This second number is transferred to the first number.

As the second number is empty, we assigned the third number to the second number. Then this third number is transferred to the second number. In the end, as a third number is now empty, we transfer the first number that is stored in the temp variable is assigned to third. This is how we swap 3 numbers using the temp variable.

This program is used to swap values of two variables using the third variable, which is the temporary variable. So first of all, you have to include the stdio header file using the "include" preceding by which tells that the header file needs to be process before compilation, hence named preprocessor directive. Then you have to define the main function and it has been declared nothing so by default it returns integer.