linking error fun

[DavidP]

So I have an include guard on this header file, but it doesn't seem to be working....

#ifndef __HEAP_H_
#define __HEAP_H_

........some structs.......

.....some functions.......

#endif /* __HEAP_H_ */

For some reason it's not working. I include heap.h in file1.c, and then again in file2.c, but when I compile it all, it's giving me linking errors saying that all the functions were already defined in file1.obj

To be exact:

1>Linking...
1>os345p2.obj : error LNK2005: _heap_init already defined in os345.obj
1>os345p2.obj : error LNK2005: _heap_isEmpty already defined in os345.obj
1>os345p2.obj : error LNK2005: _heap_isFull already defined in os345.obj
1>os345p2.obj : error LNK2005: _heap_heapify already defined in os345.obj
1>os345p2.obj : error LNK2005: _heap_addItem already defined in os345.obj
1>os345p2.obj : error LNK2005: _heap_extractMax already defined in os345.obj
1>os345p2.obj : error LNK2005: _heap_extractNode already defined in os345.obj

Any thoughts?

[Elysia]

So heap_init & co are functions defined within the header?

[vart]

you do not put function bodies in the header, only prototypes

fucntions could be declared several times, but defined only once

[DavidP]

ah yes.....that's right stupid me