C Program for swapping two numbers using pointers

C Program for swapping two numbers using pointers 

 

Program:-

#include<stdio.h>

void swap(int *num1, int *num2)

{

int temp;

temp = *num1;

*num1 = *num2;

*num2 = temp;

}

int main()

{

int num1, num2;

printf("\nEnter the first number : ");

scanf("%d", &num1);

printf("\nEnter the Second number : ");

scanf("%d", &num2);

swap(&num1, &num2);

printf("\nFirst number  : %d", num1);

printf("\nSecond number : %d", num2);

return (0);

}

 

Output:

Enter the first number  : 12

Enter the Second number : 22

First number  : 22

Second number : 12