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I can define a function but can't declare

I defined a function in file.c

#include file.h
unsigned char IsOWKeyRight(const CARD_KEY *Key);

while I had definition

typedef struct{
 unsigned char ID,
 unsigned char ExtID,
 unsigned char pwd
}CARD_KEY;

in an .h file which was included in file.h
Howerer, Keil told me"SYSTEM.H(62): error C141: syntax error near '*', expected ')'" when I declared the function in file.h like the following

extern unsigned char IsOWKeyRight(const CARD_KEY *Key);

what's wrong???!!!
Help!

0 Mik Kleshov over 21 years ago
typedef struct{ unsigned char ID, unsigned char ExtID, unsigned char pwd }CARD_KEY;

Shouldn't structure fields be separated by semicolons (;) ?

Assuming it's a typo in the forum post and not in your code, it looks as if the error is actualy caused by the fact that the compiler doesn't know about CARD_KEY when it encounters the function declaration. Are you sure that the header file containing the typedef is included above the function declaration? Sometimes header files can have funny mutual dependencies.

- mike
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0 Oleg Sergeev over 21 years ago

hi,

try:

typedef struct{
unsigned char ID;
unsigned char ExtID;
unsigned char pwd;
}CARD_KEY;

Note semicolons please.

Regards,
Oleg
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0 Nocky Tian over 21 years ago in reply to Oleg Sergeev

I am so sorry that I wrote wrong codes here, but the code in the file is write. Thank you, Oleg,anyhow!
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0 Nocky Tian over 21 years ago in reply to Mik Kleshov

Thank you very much, Mike!
You reminded me!
I included too many *.h files in a file ,so I ignored the sequence.
Now it works well, thanks!
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