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i dont know where problem!!

okthanksi solve it :)

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explain_fgets_or_die

explain_fgets_or_die(3) 				     Library Functions Manual					   explain_fgets_or_die(3)

NAME

       explain_fgets_or_die - input of strings and report errors

SYNOPSIS

       #include <libexplain/fgets.h>
       char *explain_fgets_or_die(char *data, int data_size, FILE *fp);

DESCRIPTION

       The  explain_fgets_or_die function is used to call the fgets(3) system call.  On failure an explanation will be printed to stderr, obtained
       from explain_fgets(3), and then the process terminates by calling exit(EXIT_FAILURE).

       This function is intended to be used in a fashion similar to the following example:
	      explain_fgets_or_die(data, data_size, fp);

       data    The data, exactly as to be passed to the fgets(3) system call.

       data_size
	       The data_size, exactly as to be passed to the fgets(3) system call.

       fp      The fp, exactly as to be passed to the fgets(3) system call.

       Returns:
	       This function only returns on success; data when a line is read, or NULL on end-of-file.  On failure,  prints  an  explanation  and
	       exits.

SEE ALSO

       fgets(3)
	       input of strings

       explain_fgets(3)
	       explain fgets(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2008 Peter Miller

															   explain_fgets_or_die(3)