学习类时 刚开始编译成功 并运行成功 之后在运行时就出错了 错误如下 怎么解决啊

Question

--------------------Configuration: MyMain - Win32 Debug--------------------
Compiling...
MyMain.cpp
Linking...
MyMain.obj : error LNK2001: unresolved external symbol "public: __thiscall Stock::~Stock(void)" (??1Stock@@QAE@XZ)
MyMain.obj : error LNK2001: unresolved external symbol "public: void __thiscall Stock::show(void)" (?show@Stock@@QAEXXZ)
MyMain.obj : error LNK2001: unresolved external symbol "public: __thiscall Stock::Stock(char const *,int,double)" (??0Stock@@QAE@PBDHN@Z)
Debug/MyMain.exe : fatal error LNK1120: 3 unresolved externals
执行 link.exe 时出错.

MyMain.exe - 1 error(s), 0 warning(s)

Answer 1

急的话，可以上问津，找专家解答。