est1main.obj : error LNK2001: unresolved external symbol "void __cdecl DestroyStack(struct Stack)" (?DestroyStack@@YAXUStack@@@Z)
test1main.obj : error LNK2001: unresolved external symbol "int __cdecl Pop(struct Stack,int)" (?Pop@@YAHUStack@@H@Z)
test1main.obj : error LNK2001: unresolved external symbol "int __cdecl Push(struct Stack,int)" (?Push@@YAHUStack@@H@Z)
test1main.obj : error LNK2001: unresolved external symbol "int __cdecl InitStack(struct Stack,int)" (?InitStack@@YAHUStack@@H@Z)
Debug/test1main.exe : fatal error LNK1120: 4 unresolved externals
Error executing link.exe.

test1main.exe - 5 error, 2 warning


谁能告诉我这错误的原因是什么啊？？？？？