特别注意下，不要返回局部变量的指针，因为局部变量在堆栈上，函数返回，地址就是非法的了。
// Q760646.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include <iostream>
#include <stdio.h>
int main()
{
//int* minp(int*, int*);
void min(int x, int y, int* p);
int a, b, * p, * o;
scanf_s("%d,%d", &a, &b);
int p1;
min(a, b, &p1);
printf("%d", p1);
//o = minp(&a, &b);
//printf("%d", *o);
}
void min(int x, int y, int *p)
{
if (x < y) *p = x;
else *p = y;
}
//int* minp(int* x, int* y)
//{
// int* q;
// q = *x < *y ? x : y;
// return(q);
//}
