Jump to content
  • Advertisement
Sign in to follow this  
asdqwe

(C++) "header in multiple files" question

This topic is 4042 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Correct me if I'm wrong but it seems that if I were to declare a variable (not a member variable, mind), like: int a; inside a header - then I wouldn't be able to include that header in more than one sourcefile (because of redefinition errors). Is this correct?

Share this post


Link to post
Share on other sites
Advertisement
Yes.

But headers aren't the place for variable definitions, only declarations. To declare (but not define) "int a", we would place "extern int a;" in the header, and "int a;" or "int a = /*value*/;" in one source file.

However, typically this is a bad idea, as "a" is then a global variable.

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!