C++ ~ 在客户端调用函数给出错误 : "identifier ____ is undefined"

Question

我来找你是为了解决一个涉及多个不同文件的问题。我不确定为什么会收到标题中指定的错误。让我把文件放在下面，然后从那里开始。

虚拟客户端.cpp

#include "Gameboard.h"          //for Gameboard
#include "Location.h"           //for function prototypes
#include "zList.h"              //for Zombies
#include <iostream>             //for input/output stream

using namespace std;

void main()
{
    srand(123456789);

    Gameboard myGB;

    myGB = Gameboard();

    ZombieListClass();

    ZombieRec zombieList[MAX_ZOMBIES];

    PopulateZombies(zombieList[MAX_ZOMBIES]); // this throws the error here of "Error: identifier "PopulateZombies" is undefined"

}

zList.h

#ifndef ZLIST_H
#define ZLIST_H

#include "Location.h"   // for list record
#include "ZombieRec.h"
#include "Gameboard.h"

class ZombieListClass
{

    public:
      ZombieListClass();            //default constructor 

      void PopulateZombies(ZombieRec zombieList[]);

      bool IsInBounds(int row, int col);


    private:
      ZombieRec list[MAX_ZOMBIES];      //stores the items in the list
      int length;                           //# of values currently in the list
      int currPos;                      //position of current element
      int strength;                 // health and attack units of a zombie

};

#endif

zList.cpp

#include "zList.h"

ZombieListClass::ZombieListClass()      //default constructor 
{

    length = 0;
    currPos = 0;
    strength = 5;
    LocationRec zombieLoc;

}

void ZombieListClass::PopulateZombies(ZombieRec zombieList[])
{
    int row, col;

    for (int i = 0; i < MAX_ZOMBIES; i++)
    {
        row = rand() % MAX_ROW + 1;
        col = rand() % MAX_COL + 1;

        while (!IsInBounds(row, col))
        {
            row = rand() % MAX_ROW + 1;
            col = rand() % MAX_COL + 1;
        }

        zombieList[i].currLoc.row = row;
        zombieList[i].currLoc.col = col;

    }


}

bool ZombieListClass::IsInBounds(int row, int col)
{

    if (row == 0 || row == MAX_ROW + 1 || col == 0 || col == MAX_COL + 1)
    {
        return false;
    }
    else
    {
        return true;
    }

}

游戏板.h

#ifndef GAMEBOARD_H
#define GAMEBOARD_H


#include "Location.h" 
#include "ZombieRec.h"
#include "zList.h"


const int MAX_ROW = 3;      // total number of rows in the board
const int MAX_COL = 3;      // total number of cols in the board



class Gameboard
{

public:

    Gameboard();


private:
    int boardSizeArr[MAX_ROW + 2][MAX_COL + 2];


}; // end Gameboard

#endif

最后，Gameboard.cpp

#include "Gameboard.h"

Gameboard::Gameboard()
{

    // Declares a board with a boundary along the outside
    boardSizeArr[MAX_ROW + 2][MAX_COL + 2]; 

}

我不想被人灌输，也不想有人为我解决我的问题，我想弄清楚我做错了什么，这样我的项目的其余部分就不会像以前那样坎坷一直以来。

回顾我的错误，“identifer “PopulateZombies” is undefined”，我无法想象这是为什么。这可能与我做事的范围有关吗？如果我遗漏了任何代码(我没有把所有东西都放在那里，但我认为我有所有相关的东西)请告诉我，只要这需要我就可以来回交谈。

提前感谢所有试图提供帮助的人:)

-安东尼

Answer 1

一般情况下，您使用变量调用函数，而不是在类中定义时直接调用它:

ZombieListClass zombieList=new ZombieListClass();  // add a variable here

ZombieRec zombieList[MAX_ZOMBIES];

zombieList.PopulateZombies(zombieList[MAX_ZOMBIES]); // See the difference?