Question

尝试编译时，我收到以下错误：

1＆gt; main.obj：错误LNK2019：Verweis aufnichtaufgelöstesexternes 符号“”public：void __thiscall Area :: createArea（void）“ （？createArea @ Area @@ QAEXXZ）“在Funktion”_main“。1＆gt; D：\ C ++ Projekte \ EREBOS_2 \ Debug \ EREBOS_2.exe：致命错误LNK1120：1 nicht aufgelösteexterneVerweise。

英文翻译：

1＆GT; main.obj：错误LNK2019：未解析的符号“”的外部引用 public：void __thiscall Area :: create area（void）“（？创建区域区域@@@ QAEXXZ）“函数在”_main“1＆gt; D：。\ C ++ Projects \ EREBOS_2 \ Debug \ EREBOS_2.exe：致命错误LNK1120：1个未解析的外部。

这是什么意思？我该如何解决？

代码：

#include <iostream>
#include "windows.h"
#include "MainMenu.h"
#include "MainPlayer.h"
#include <ctime>
#include <string>

int y;
int x;

using namespace std;

void createArea()
{
    int area[15][15];

    for(int y = 0; y < 15; y++)
    {
        for (int x = 0; x < 15; y++)
        {
            area[x][y] = 0;
        }
    }
    //---------------------------------
    for(int counter = 0; counter < 15; counter++)
    {
        area[1][y] = 1;
        area[15][y] = 1;
    }
    //--------------------------------------
    for (int y = 0; y <15; y++)
    {
        for (int x = 0; x < 15; x++)
        {
            cout << area[x][y];
        }
    }
}

#include <iostream>
#include "windows.h"
#include "MainMenu.h"
#include <ctime>
#include <string>
using namespace std;

void MainMenu:: createMenu()
{
    int typed;
    system("cls");
    cout << endl;
    cout << endl;
    cout << "   --------------" << endl;
    cout << "   | 1) Start   |" << endl;
    cout << "   | 2) Hilfe   |" << endl;
    cout << "   | 3) Credits |" << endl;
    cout << "   | 4) Beenden |" << endl;
    cout << "   --------------" << endl;
    cin >> typed;
    if(typed == 1)
    {
        cout << "...still a whole lot of work to do..." << endl;
    }
}

#include <string>
class MainMenu
{
public:
    void createMenu();
};

#include <iostream>
#include "windows.h"
#include "MainMenu.h"
#include "MainPlayer.h"
#include <ctime>
#include <string>

using namespace std;

void Mainplayer:: showData()
{
    using namespace std;
    int health = 100;
    int xp = 0;
    int lvl = 1;
    int gold = 10;
    std:: string Name = "Namenloser";
    system("cls");
    cout << "-----------------------" << endl;
    cout << "Name: " << Name << endl;
    cout << "Leben: " << health << "/100" << endl;
    cout << "Erfahrung: " << xp << "/" << lvl*10 << endl;
    cout << "Level: " << lvl << "/50" << endl;
    cout << "Gold: " << gold << endl;
    cout << "------------------------" << endl;
}

#include <string>
class Mainplayer
{
    public:
        int health;
        int xp;
        int lvl;
        int gold;
        std:: string Name;
        void showData();
        int playercoordy;
        int playercoordx;
};

#include <iostream>
#include "windows.h"
#include "MainMenu.h"
#include "MainPlayer.h"
#include "Area.h"
#include <ctime>
#include <string>
using namespace std;

void maingame();

int main()
{
    system("title EREBOS 2");
    Mainplayer MainChar; 
    MainMenu menu;
    Area MainArea; 
    menu.createMenu();
    MainChar.showData();
    MainArea.createArea();
    getchar();
    getchar();
}

Answer 1

该消息表示您尝试调用＆＃34; public：void __thiscall Area :: createArea（void）＆＃34;但是后来链接器找不到该功能。

我看到的最接近的是MainArea.createArea（）; - 我猜你要么没有实现这个功能（在Area.cpp中，你没有告诉我们），或者你只是没有链接Area.o，或者没有以所需的顺序。

请参阅What is an undefined reference/unresolved external symbol error and how do I fix it?

这个编译错误是什么？

1 个答案: