ftell() fclose() and FILE* f = NULL

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Join Date: Oct 2006

Posts: 93

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edek

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Junior Poster in Training

**ftell() fclose() and FILE* f = NULL**

May 9th, 2008

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
FILE* f = NULL;
fclose(f);
FILE* f = NULL;
fclose(f);

Terminates with: 'No source available for "fclose@@GLIBC_2.1() " '

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
FILE* f = NULL;
ftell(f);
FILE* f = NULL;
ftell(f);

Terminates with: 'No source available for "ftell()"'

Why those functions does not return error value but terminate whole program? How can I safely tell if file is opened in C and close it???

If variable of type 'FILE*' is passed to my function I need to know the state of the file and be able to close.
Any idea?

Last edited by edek : May 9th, 2008 at 8:58 am.