这是什么错误啊??
//cTreehange 是我自定义的函数 change也是函数 是 嵌套在 treeChange 的
TreeChange.obj : error LNK2001: unresolved external symbol "void __cdecl change(struct PTree *,struct NTree * &,int &)" (?change@@YAXPAUPTree@@AAPAUNTree@@AAH@Z)
Debug/TreeChange.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.