Write a program that swaps the values of two variables using a third variable.

Dr. A.P.J. Abdul Kalam Technical University, Lucknow

KCS101 / KCS201 Programming for Problem Solving - Using C Language

Lab Exercises

5. Write a program that swaps the values of two variables using a third variable.

/*

 File: Prgrm05.c

 Author: Aditya Saini

 Date: Sept 17, 2019

 Description: Program to swap the value of two variables using the third variable.

*/

#include <stdio.h>

int main (void)

{

               int variable_1, variable_2, temp_variable;

               //Input the value of variables.
               printf ("Input the value of first variable: ");
               scanf ("%d", &variable_1);
               printf ("Input the value of second variable: ");
               scanf ("%d", &variable_2);

               //Swapping the values.

               temp_variable = variable_1;
               variable_1 = variable_2;
               variable_2 = temp_variable;

               //Output the result.
               printf ("\nAfter Swapping\n");
               printf ("Value of first variable: %d \n", variable_1);
               printf ("Value of second variable: %d \n", variable_2);

               return 0;

};

Output

Input the value of first variable: 15
Input the value of second variable: 17

After Swapping
Value of first variable: 17
Value of second variable: 15