c++，成员函数做友元

#include
#include
using namespace std;
#include
#include
class Building;
class goodgay
{
public:
    goodgay();
    void visit01();
    void visit02();
    Building *building;
};
class Building
{
    friend void goodgay::visit01();
public:
    Building();
public:
    string m_sitting;
private:
    string m_bed;
};
goodgay::goodgay()
{
    building=new Building;
}
void goodgay::visit01()
{
    cout<<"gay的"<m_sitting<     cout<<"gay的"<m_bed< }
void goodgay::visit02()
{
    cout<<"gaydede "<m_sitting<     //cout<<"gaydede "<m_bed< }
Building::Building()
{
    m_sitting="客厅";
    m_bed="卧室";
}
void test()
{
    goodgay gg;
    gg.visit01();
}
int main()
{
    test();
    system("pause");
    return 0;
}