Swap 2 numbers using third variable

Posted on Dec 26, 2019

C program to swap two numbers using third variable.

Program

#include<stdio.h>
#include<conio.h>
void main()
{
    int num1, num2, temp;

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

    printf("Before Swapping\n num1 = %d\n num2 = %d\n",num1,num2);

    // logic for swapping
    temp = num1;
    num1 = num2;
    num2 = temp;

    printf("\n\nAfter Swapping\n num1 = %d\n num2 = %d\n",num1,num2);

    getch();
}

Output

Enter the numbers to be swapped :4
5
Before Swapping
 num1 = 4
 num2 = 5


After Swapping
 num1 = 5
 num2 = 4

Explanation