1.文件yoffgroup.h

class YOffGroup

{ public:    YOffGroup(short roomId);    ~YOffGroup();    inline bool setOffGamerWithSeat(char seat, YGamer*gamer);private:    YGamer *m_offGamers[3]; /**< 存放替代玩家游戏的AI, 下标就是座位号*/    short m_roomId;      /**< 该组所对应的房间id */};

2.源文件  yoffgroup.cpp

bool YOffGroup::setOffGamerWithSeat(char seat, YGamer *gamer){

    if(seat<0|| seat >2)    {         return false;    }    YGamer *old = m_offGamers[seat];    //            delete m_offGamers[seat];    delete old;    m_offGamers[seat] = gamer;    return true;}

3,以上将标注的有inline的函数的实现放在了源文件，在调用时就会出这样的莫名错误

error: undefined reference to `YOffGroup::setOffGamerWithSeat(char, YGamer*)'

4，对于以上的错误有两个解决方案

a，将inline去掉

b，将原文件中对应的实现放到头文件中