Why'd we can't make string as the return type's of a function in the header file?

Question

Confused with the header

Answer 1

You can. Its valid for both C-strings and C++ strings :

C : char* strcat(char*,const char*);

C++ : string strcat(string, const string);

Answer 2

I assume you're using C++ because you say header file. it's been a long time since I did any C code but I do remember that string type is not a standard data type. you mightneed to include something, maybe string.h to use it. I'm not sure this is correct but it's my best guess.

Answer 3

In C++ you can but make sure the string. H header file is included.