c++指针实现2数交换

#include <stdio.h>#include <stdlib.h>void main(){/*int a, *b;b = &a;int hj = 10;int *p;p = &hj;printf("%d", p);*/int a, b;scanf("%d%d",&a, &b);printf("%d ,%d",a, b);int *p1 = &a;int *p2 = &b;if (*p1 < *p2){} else {int *p;p1 = p;p1 = p2;p2 = p;}/*if (a > b){} else {int  temp ;temp = a;a = b;b = temp;}*/printf("\n%d,%d",a, b);system("pause");}