自考新教材-p228

互包含的类

源程序：

#include<iostream>

#include<string>

using namespace std;

class B;

class A

{

public:

int aInt;

B *bPoint=NULL;

void SetValue(int v)

{

aInt=v;

}

};

class B

{

public:

A aCla;

int bInt;

void SetValue(int v)

{

bInt=v;

}

};

int main()

{

A ca;

B cb;

ca.bPoint=&cb;

cout<<"ca.bPoint="<<ca.bPoint<<endl;

cout<<"cb Addr="<<&cb<<endl;

cout<<"ca.aInt="<<ca.aInt<<endl;

cout<<"ca.aCla.aInt="<<cb.aCla.aInt<<endl;

cout<<"cb.bInt="<<cb.bInt<<endl;

cout<<"分界线"<<endl;

ca.SetValue(10);

ca.SetValue(20);

cb.aCla=ca;

cout<<"ca.bPoint="<<ca.bPoint<<endl;b

cout<<"ca.aInt="<<ca.aInt<<endl;

cout<<"ca.aCla.aInt="<<cb.aCla.aInt<<endl;

cout<<"cb.bInt="<<cb.bInt<<endl;

return 0;

}

运行结果：

原文地址：https://www.cnblogs.com/duanqibo/p/12183476.html