//
//  call_reference_using_pointers.c
//  
//
//  Created by Bibhas Ghoshal on 20/02/21.
//

#include <stdio.h>
void swap(int*,int*);

int main()
{
    int a,b;
    a=5;b=20;
    printf("Before swap : a=%d,b=%d\n",a,b);
    swap(&a,&b);
    printf("After swap : a=%d,b=%d\n",a,b);
}

void swap(int *x, int*y)
{
    int t;
    t = *x;
    *x = *y;
    *y = t;
}