C.obj : error LNK2001: unresolved external symbol "public: int __thiscall Information::count(struct student *)" (?count@Information@@QAEHPAUstudent@@@Z)
C.obj : error LNK2001: unresolved external symbol "public: void __thiscall Information::paixu(struct student *)" (?paixu@Information@@QAEXPAUstudent@@@Z)
Debug/¸öÈËÐÅÏ¢.exe : fatal error LNK1120: 2 unresolved externals

"public: void __thiscall Information::paixu(struct student *)"  語句錯誤吧```