(C++) extern class?

Question

lets say i have 3 files. file1.cpp file2.cpp file3.h
file1.cpp is contain main function and a class named "game". and "game" class need "player" class.
so i wrote "player" class in file2.cpp. file3.h is containing some useful functions (like index, convert data types).

so how to share "player" class into file1.cpp? i know it can be done easily with putting "player" class in file3.h or put #include "file2.cpp" in file1.cpp, but i wont. i just want to know. (just like extern class)

Answer 1

now im using c++ complier. im not sure but in terminal i can type c++ file1 file2 -o file_output

Answer 2

@jamie

we dont need to include file2.h in file2.cpp?

Answer 3

basically that puts player class in header file. but i think that is the only way...thanks

Answer 4

https://www.programiz.com/cpp-programming/library-function/cstdio/fscanf

i read that. im not sure

i think fscanf is only sharing variable