#include<stdio.h>

int main()

{

int a, b, * p1, * p2,t=0;

printf("请输入两个数：");

scanf("%d,%d", &a, &b);

p1 = &a; p2 = &b;

if (a < b)

{

 t =*p1 ;

 *p1 = *p2;

 *p2 = t;

}

printf("%d %d", a, b);

}