Question

C files renamed to C++ are going to be compilable with C++ compilers after renaming?
So I have 25 C files and 1 C++ file I do not want to create Make files or anething like that. I want to turn all that C files into C++ so will simple renaming work or what shall I do?

Answer 1

In general, yes. You will have to worry about variables named class and such, the sizeof a character literal, and name mangling, and some other rarely encountered issues. If you’re converting C99 to C++, you’ll have to drop some C99 features.

With regards to name mangling, reference any C symbols by using extern "C". A common idiom is:

#ifdef __cplusplus
extern "C" {
#endif

extern int myGlobal;
extern int myFunction(void);
/* etc */

#ifdef __cplusplus
}
#endif