Swap Two Numbers Example in C

About this program

This is an example program in c other programs. Read the concept first: If Else Statement in C, then study the code and output below.

Swap Definition

In computer programming, the act of swapping two variables refers to mutually exchanging the values of the variables. Usually, this is done with the data in memory

Using a temporary variable

The simplest and probably most widely used method to swap two variables is to use a third temporary variable:

  temp := x
  x := y
  y := temp

Swapping Two Numbers Example Program

/*##Swapping Two Numbers*/
/*##Calculation Programs, Datatype Programs, Basic Programs*/
/*##Example*/

#include <stdio.h>

int main()
{
    int num1, num2, temp;

    printf("Enter the 2 numbers to be swapped : \n");
    scanf("%d%d", &num1, &num2);

    printf("Before Swapping, the values are : \nnum1 = %d\nnum2 = %d\n",num1,num2);

    temp = num1;
    num1 = num2;
    num2 = temp;

    printf("After Swapping, the values are : \nnum1 = %d\nnum2 = %d\n",num1,num2);

    return 0;
}

Sample Output:

Enter the 2 numbers to be swapped :
100
99
Before Swapping, the values are :
num1 = 100
num2 = 99
After Swapping, the values are :
num1 = 99
num2 = 100

Related Pages

Learn the concept first, then study the code:

• C Programs — Browse all C Programs.
• If Else Statement in C — Tutorial — decision control for utility programs.
• Reverse Number Example Program In C Programming Language — More in c other programs.
• Example Program for Print 1 to N In C Programming — More in c other programs.