关于友元函数
#ifndef TEST_H
#define TEST_H
#include"stdafx.h"
#include<iostream>
#include<string>
using namespace::std;
class A
{
private:
int i;
public:
A():i(1){}
void output(B b)
{
cout<<b.j<<endl;
}
};
class B
{
private:
int j;
public:
B():j(2){}
friend void A::output(B);
};
#endif
class B;
class A
{
private:
int i;
public:
A():i(1){}
void output(B b);
};
class B
{
private:
int j;
public:
B():j(2){}
friend void A::output(B);
};
void A::output(B b)
{
cout<<b.j<<endl;
}