让公共成员变量访问 C++ 中同一类的私有成员

Posted 2023-02-22

【中文标题】让公共成员变量访问 C++ 中同一类的私有成员

【英文标题】：Having public member variables access private members of the same class in C++

【发布时间】：2019-11-16 03:36:43

【问题描述】：

我正在尝试创建一个类，其中函数更改该类的私有成员的值，但我不断收到“使用未声明的标识符”的错误。我想如果函数是类成员，那么他们可以访问私有成员？

我的代码供参考

建筑.h

#ifndef BUILDING_H
#define BUILDING_H
#include "Point2D.h"
#include "GameObject.h"

class Building : public GameObject


private:
    unsigned int pokemon_count;

Building();
Building(char,int, Point2D);

public:
    void AddOnePokemon();
    void RemoveOnePokemon();
    void ShowStatus();
    bool ShouldBeVisible();

;

#endif

建筑.cpp

#include "Building.h"
#include "GameObject.h"
#include <iostream>
using namespace std;

Building::Building()

    display_code = 'B';
    location;
    id_num = ' ';
    state = '0';
    pokemon_count = 0;
    cout << "Building default constructed";


Building::Building(char in_code,int in_id, Point2D in_loc)

    id_num = in_id;
    location = in_loc;
    display_code = in_code;
    state = '0';
    cout << "Building constructed";


void AddOnePokemon()

    pokemon_count = pokemon_count+1;


void ReturnOnePokemon()

    pokemon_count = pokemon_count-1;


void ShowStatus()

    cout << "\"(" << pokemon_count << "pokemon is/are in this building";

【参考方案1】：

您的函数超出了您的课程范围。

在函数前面添加类名，这应该可以工作：

void Building::AddOnePokemon()