#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
using namespace std;
struct Person
{
int m_Age;
};
void allocatMemory(Person ** p) // **p 具体的Person对象 *p 对象的指针 p 指针的指针
{
*p = (Person *)malloc(sizeof(Person));
(*p)->m_Age = 100;
}
void test01()
{
Person * p = NULL;
allocatMemory(&p);
cout << "p的年龄： " <<p->m_Age << endl;
}
//利用指针引用开辟空间
void allocatMemoryByRef(Person* &p)
{
p = (Person*)malloc(sizeof(Person));
p->m_Age = 1000;
}
void test02()
{
Person * p = NULL;
allocatMemoryByRef(p);
cout << "p的年龄：" << p->m_Age << endl;
}
int main(){
//test01();
test02();
system("pause");
return EXIT_SUCCESS;
}
