yes I did it in extern_file.c
--- In [email protected], "Brett McCoy" <[EMAIL PROTECTED]> wrote:
>
> On 10/4/07, sadhanavs <[EMAIL PROTECTED]> wrote:
>
> > I have two files extern_function.c and extern_file.c.
> >
> > // extern_file.c
> >
> > int x =20;
> > int getData()
> > {
> > return 20;
> > }
> >
> > // extern_function.c
> >
> > extern int getValue();
> > extern int k;
> > int main()
> > {
> >
> > printf("%d\n", getValue());
> > getInput();
> > return 0;
> >
> > }
> >
> > int getInput(){
> > printf(" Value:-%d ",k);
> > return 0;
> > }
>
>
> I don't see anywhere where you define k. You declare it with extern
> which means the compiler is expecting it to be defined somewhere else.
> Did you mean int k = 20 in the first file?
>
> > i compile it using gcc.
> >
> > gcc extern_file.c extern_function.c
> > Undefined first referenced
> > symbol in file
> > k /var/tmp//ccctm19K.o
> > ld: fatal: Symbol referencing errors. No output written to a.out
> > collect2: ld returned 1 exit status
> >
> > Why is that the function getValue() works with extern and not k?
> > I commented out the printf("%d",k);
> > Is there something else i need in order to get the object files
linked?
> >
> > Thanks
> > Sadhana
> >
> >
> >
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>
>
> --
> ------------------------------------------------------------
> "In the rhythm of music a secret is hidden;
> If I were to divulge it, it would overturn the world."
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>
