Swapping with pointer

#include <stdio.h>
#include <stdlib.h>
void swap(int *x,int *y)
{
    int temp = *x;
    *x = *y;
    *y = temp;
}

int main()
{
    int n,m;
    scanf("%d %d",&n,&m);
    swap(&n,&m);
    printf("%d %d\n",n,m);

    return 0;
}