Undefined Reference to a function

Question

I\'m using Linux and I have the following files:

main.c, main.h
fileA.c, fileA.h
fileB.cpp, fileB.h

The function F1() is decla

Answer 1

To be able to call a c++ function from c source code you neeed to give the appropriate linkage specification.

The format for specifying linkage specification is

extern "type_of_Linkage" 

So in your case, you should be using:

extern "C" void F1();