C ++对象作为参数

Question

I am trying to make a program where I need to pass objects as argument to a function in a class, but it gives me these errors:

------ Build started: Project: C++ Program, Configuration: Debug Win32 ------

Main.cpp
[...]\\game.h(8): error C2061: syntax error : identifier 'Chapter'
[...]\\main.cpp(9): error C2660: 'Game::addChapter' : function does not take 1 arguments

Game.cpp
[...]\\game.h(8): error C2061: syntax error : identifier 'Chapter'
[...]\\game.cpp(20): error C2511: 'void Game::addChapter(Chapter *)' :
overloaded member function not found in 'Game'
[...]\\game.h(3) : see declaration of 'Game'

My Code:

Main.cpp

#include "Game.h"
#include "Chapter.h"

int main(void)
{
Game game;
Chapter hi;

game.addChapter(&hi);
game.start();
return 0;
}

Game.cpp

#include "Game.h"
#include <iostream>
#include <vector>
#include <string>
#include "Chapter.h"

using namespace std;

Game::Game()
{

}

Game::~Game()
{

}

void Game::addChapter(Chapter *chapter)
{
    cout << "Added";
}

void Game::start()
{
cout << "Started";
}

Game.h

#pragma once
class Game
{
public:
    Game();
    ~Game();

    void addChapter(Chapter *chapter);
    void start();
};

Chapter.cpp

#include "Chapter.h"

Chapter::Chapter()
{

}


Chapter::~Chapter()
{

}


void Chapter::getInput()
{
cout << "Hello";
}

Chapter.h

#pragma once
class Chapter
{
public:
    Chapter();
    ~Chapter();

protected:
    void getInput();
};

Why am I getting this error and how can I solve the problem?

Answer 1

Include Chapter.h in Game.h .

\game.h(8): error C2061: syntax error : identifier 'Chapter

You need to tell where the compiler can find the definition of Chapter when it reads the definition of addChapter in Game.h .

Answer 2

You are missing a include to Chapter.h inside of Game.h

#include "Chapter.h"

#pragma once
class Game
{
public:
    Game();
    ~Game();

    void addChapter(Chapter *chapter);
    void start();
};

With that everything works like you'd expect