problem with compiling different C files with a global structure

[Debmalya Sinha <sunnywizard@xxxxxxxxx>]

Hello,

Though this might not be the place for this type of query, this problem I'm giving here is a simplest scale version of a problem when I am trying to split up a large gtk source code of mine.

I'm trying to compile a program with 3 diff C files.

main.c

call.c

global.c

I want to declare a global structure variable and assign a value to it's content in main.c

then I  will call another function (declared at call.c ) to print the global variable.

I have a structure definition in global.c which I have declared as extern in the common header file head.h through another header file global.h

Program is not compiling.

Am I missing some points here?

--
Regards,

Debmalya Sinha

Research Scientist,
MS(R) student,
Computer Science and Engineering
IIT Kharagpur


Fedora Ambassador
Chandannagar
India.

sunnywizard.googlepages.com


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#include "head.h"

void call(void){

printf("\n%d", a.data);

}

#include "head.h"

struct _s{

int data;

}

#include "head.h"

struct _s a;
a.data=10;

main(){



cal();

}

#include <stdio.h>
#include "global.h"

void call(void);

extern struct _s a;

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