C++ 类重定义错误：解决方案及示例

//File a.cpp namespace A { class FileConfig { protected: FILE file; const std::string& fileName; public: FileConfig(const std::string& fileName) { this->fileName = fileName; } }; }

//File lib.h namespace B { class FileConfig { protected: FILE file; const std::string& fileName; public: FileConfig(const std::string& fileName); }; }

或者：

//File a.cpp class FileConfigA { protected: FILE file; const std::string& fileName; public: FileConfigA(const std::string& fileName) { this->fileName = fileName; } };

//File lib.h class FileConfigB { protected: FILE file; const std::string& fileName; public: FileConfigB(const std::string& fileName); };