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Problem using a struct from main. in other files.

 
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Problem using a struct from main. in other files.
PostPosted: Fri Aug 08, 2008 3:00 pm     Reply with quote
Hi

Problem using var from main. in other files.

My test project is:
1 main.c and 1 test.c
In main.c

Code:
struct _pos{
 int x;
 int y;
}pos;

int pos_main(){
 return (pos.x+4);
}


in test.c I can use the function "pos_main" but not access the struct?

I know I can put the struct in a .h file and then #include it in main.c and test.c but I dont.

any hints?
RLScott



Joined: 10 Jul 2007
Posts: 465

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Re: Problem using a struct from main. in other files.
PostPosted: Fri Aug 08, 2008 3:03 pm     Reply with quote
Anonymous wrote:
...I know I can put the struct in a .h file and then #include it in main.c and test.c but I dont...


Why don't you? That's what I would do.
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Robert Scott
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Embedded Systems Consulting
Wayne_



Joined: 10 Oct 2007
Posts: 681

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PostPosted: Mon Aug 11, 2008 2:18 am     Reply with quote
The other option is to define it as an extern within test.c

Something like

Code:

extern struct _pos{
 int x;
 int y;
} pos;


This then allows you to reference pos within test.c.

I have not tested this with CCS but it is standard C to reference an external variable.
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