C Programming. Program in which function is passed address of two variables and alter its contents.

Program in which function is passed address of two variables and alter its contents.

// Program in which function is passed address of two variables and alter its contents.

#include<stdio.h>

void alter(int* , int*);

int main() {

    int a, b;

    printf("Enter two numbers : ");

    scanf("%d%d",&a, &b);

    printf("Before swapping a = %d, b = %d", a, b);

    alter(&a, &b);

    printf("\nAfter swapping a = %d, b = %d", a, b);

    return 0;

}

void alter(int*a , int*b){

    int t;

    t=*a;

    *a=*b;

    *b=t;

}

Output :

Enter two numbers : 5 7 Before swapping a = 5, b = 7 After swapping a = 7, b = 5