expected declaration specifiers or ‘...’ before ‘FILE’

Question

I am writing code in c.
I am declaring a FILE* fp at the main function (main.c).
We have other files at the project too.
So at a header file I am getting this error:
"expected declaration specifiers or ‘...’ before ‘FILE’ problem"
at this line:
void myfunct(argumenttype argument, FILE *fp);

What am I doing wrong?

Working in Linux(gedit+gcc).

Did you include stdio.h? what is "argumenttype"? – Random832 May 28 '11 at 17:06 — Random832, May 28 '11 at 17:06

score 1 · Answer 1 · answered May 28 '11 at 17:30

1

You must include the header before you use the typedef'd element, otherwise FILE means nothing to the compiler, and it doesn't know what it is looking at.

answered May 28 '11 at 17:30

jonsca

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score 0 · Answer 2 · edited May 29 '11 at 14:00

0

argumenttype is a typedef'ed type of pointer to a struct.

typedef struct testStruct testptr;
void myfunct(testptr test, FILE *fp);

I have just included stdio.h at this header file. And it worked fine. So everywhere I use library dependant functions or typedef'ed types I must include the relevant library?

Thank you very much!

edited May 29 '11 at 14:00

Alberto Zaccagni

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answered May 28 '11 at 17:17

Chris

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If you flag your post for a mod, they might be able to move this information back into your question. I'm not completely clear on what, if any, options you have to reclaim it as part of your account. – jonsca May 28 '11 at 17:32

expected declaration specifiers or ‘...’ before ‘FILE’

2 Answers2