友元成员（函数）

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#include<iostream>
#include<string.h>
using namespace std;
class boy;
class girl
{
private:
	char *name;
	int age;
public:
	girl(char *n,int a)
	{	name=new char[strlen(n)+1];
		strcpy(name,n);
		age=a;
	}
	~girl()
	{delete name;}
	void ptr(boy &p);
};
class boy
{
private:
	char *name;
	int age;
public:
	boy(char *n,int a)
	{	name=new char[strlen(n)+1];
		strcpy(name,n);
		age=a;
	}
	~boy()
	{delete name;}
	friend void girl::ptr(boy &p);//girl中的成员函数ptr可以调用boy中的私有成员
};
void girl::ptr(boy &p)
{
	cout<<"girl name:"<<name<<",age:"<<age<<endl;
	cout<<"boy name:"<<p.name<<",age:"<<p.age<<endl;


}
void main()
{
	boy a("赖卓成",20);
	girl b("赖大大",21);
	b.ptr(a);
}