Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


multiple definitions error

multiple definitions error

multiple definitions error

I'm using the Metrowerks Codewarrior compiler, and I am trying to do something like this in a for loop, inside a void function:

if ((structArray.info & someMask) == someMask)
   cout << "something" << endl;

all I did was define three different masks globally in a header file then:
  in a function in my implementation file, I used the bitwise or--  |  --to set the above variable, using the masks, and based on a simple boolean expression
  in another function in that same file I did the above with the same three masks

thank you

RE: multiple definitions error

How exactly are you defining someMask.  Is it something like

#define MASK1 0xFF


const int MASK1=0xFF

If it is the latter, you need a header file with just

extern const int MASK1;

and just one code file with the definition of MASK1.  If it is using #define, there shouldn't be any problems.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close