#include <stdio.h>

void sort(int *p1,int *p2){
    int temp;
    temp = *p1;
    *p1 = *p2;
    *p2 = temp;
}

int main() {
    int n = 0;
    int p1 = 15;
    int p2 = 7;

sort(&p1,&p2);
    
    printf("%d,%d",p1,p2);
}