c++ - Unresolved external symbol error for overloaded constructor -


this question has answer here:

actually i've been searching error , found tons of solutions couldn't fix problem , easy can't handle...

/* header */ class employeeregister { private:     empreg *emp; public:     employeeregister(int,int); };   /* cpp file*/ employeeregister::employeeregister(int a,int b) {     cout << "result  : " << a+b << endl; }   /* in main file*/ employeeregister sub(1,1);

and when or : 

main.obj:-1: error: lnk2001: unresolved external symbol "public:     __thiscall employeeregister::employeeregister(int,int)"     (??0employeeregister@@qae@hh@z)

actually i'm sure easy missing ?

edit : it's fixed , linker couldn't find .cpp file.

make sure non-main .cpp file listed in project (or in linker command-line) can linked main.cpp


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