* 令牌之前的预期初始值设定项

Expected initializer before * token

本文关键字：令牌      更新时间：2023-10-16

所以我有这个头文件：

#pragma once
#include "engine.hpp"
namespace spacecubes
{
  extern engine* _engine;
}

和随附的引擎.hpp：

#pragma once
#include <iostream>
#include "glinclude.hpp"
#include "debug.hpp"
#include "convert.hpp"
#include "renderer.hpp"
#include "global.hpp"
namespace spacecubes {
    void display();
    class engine {
        renderer renderengine;
    public:
        void start(int argc, char* argv[]);
        void stop(int status = 0);
        void poll();
        renderer getRenderEngine() {return renderengine;}
    };
}

编译器后来报告的内容是：

g++  -c -o bin/obj/engine.o src/engine.cpp
In file included from src/engine.hpp:9,
                 from src/engine.cpp:1:
src/global.hpp:7: error: expected initializer before '*' token
src/engine.cpp: In function 'void spacecubes::display()':
src/engine.cpp:5: error: '_engine' was not declared in this scope

我不明白。它期望初始化是什么意思？提前感谢！

替换 

#include "engine.hpp"

带有前瞻声明：

namespace spacecubes { class engine; }
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