GCC compiler error: “redefinition…previously defined”

Question

I\'m getting a lot of \" redefinition of x....x previously defined here\". Please what does this error means?

Answer 1

You need to limit each file from being included only once. You can do this in 2 ways.

1) At the top of your header files put:

#pragma once

Or 2) if your compiler doesn't support that, put at the top/end of your header files:

#ifndef _MYFILE_H_
#define _MYFILE_H_
...
#endif

Replace MYFILE with the name of your file, and replace ... with the contents of the header file.