#include <stdio.h>

void swap_2(int *a, int *b){
	int temp;
	temp = *a;
	*a = *b;
	*b = temp;
}

int main(){
	int x = 3; int *x_ptr;
	int y = 4; int *y_ptr;
	x_ptr = &x;
	y_ptr = &y;  
        /* print the values in x and y */
        printf("Before swap2 %d %d\n", x,y);
	swap_2(x_ptr,y_ptr);
	printf("After swap2 %d %d\n", x,y);
	return 0;
}