Back to General and Gameplay Programming

C: Making a delcared struct global [Solved]

General and Gameplay Programming Programming

Started by Xiachunyi June 20, 2005 04:58 PM

1 comment, last by Xiachunyi 18 years, 10 months ago

Xiachunyi

556

Author

June 20, 2005 04:58 PM

Hello, is it possible to declare a structure globally in a header file so that all files that include it have access to its members? Example: Header.h


struct
{
    int MemberOne;
    float MemberTwo;
    char MemberThree;
} Stuff;

SourceOne.c and SourceTwo.c both have


#include "Header.h"
...
//Member manipulation

I tried just adding the structure to my header file, I ony have one at the moment, and my compiler throws up a redundant declaration error. Thank you. [Edited by - Xiachunyi on June 20, 2005 5:23:46 PM]

Agony

3,452

June 20, 2005 05:02 PM

You need to declare that it exists by name in your header file, but define it only once, in only one .c file.

//Definition.hstruct s_Stuff{    int MemberOne;    float MemberTwo;    char MemberThree;};extern struct s_Stuff Stuff;//Declaration.c#include "Definition.h"struct s_Stuff Stuff;//Usage.c#include "Definition.h"int main(){  Stuff.MemberOne = 1;  Stuff.MemberTwo = 2.0f;  Stuff.MemberThree = '3';  return 0;}

"We should have a great fewer disputes in the world if words were taken for what they are, the signs of our ideas only, and not for things themselves." - John Locke

Xiachunyi

556

Author

June 20, 2005 05:23 PM

Thank you very much for replying so quickly; it works wonderfully.

C: Making a delcared struct global [Solved]

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

C: Making a delcared struct global [Solved]

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Reticulating splines