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Linux 2.6 - man page for fgets (linux section 3posix)

FGETS(P)			    POSIX Programmer's Manual				 FGETS(P)

NAME
       fgets - get a string from a stream

SYNOPSIS
       #include <stdio.h>

       char *fgets(char *restrict s, int n, FILE *restrict stream);

DESCRIPTION
       The  fgets()  function  shall read bytes from stream into the array pointed to by s, until
       n-1 bytes are read, or a <newline> is read and transferred to s, or an end-of-file  condi-
       tion is encountered. The string is then terminated with a null byte.

       The  fgets()  function  may mark the st_atime field of the file associated with stream for
       update. The st_atime field shall be marked for update by the first successful execution of
       fgetc(),  fgets(),  fgetwc(),  fgetws(),  fread(), fscanf(), getc(), getchar(), gets(), or
       scanf() using stream that returns data not  supplied  by  a  prior  call  to  ungetc()  or
       ungetwc().

RETURN VALUE
       Upon  successful  completion, fgets() shall return s. If the stream is at end-of-file, the
       end-of-file indicator for the stream shall be set and fgets() shall return a null pointer.
       If  a  read  error  occurs, the error indicator for the stream shall be set, fgets() shall
       return a null pointer,	 and shall set errno to indicate the error.

ERRORS
       Refer to fgetc() .

       The following sections are informative.

EXAMPLES
   Reading Input
       The following example uses fgets() to read each line of input.  {LINE_MAX}, which  defines
       the maximum size of the input line, is defined in the <limits.h> header.

	      #include <stdio.h>
	      ...
	      char line[LINE_MAX];
	      ...
	      while (fgets(line, LINE_MAX, fp) != NULL) {
	      ...
	      }
	      ...

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       fopen()	,  fread()  ,  gets()  ,  the  Base  Definitions  volume of IEEE Std 1003.1-2001,
       <stdio.h>

COPYRIGHT
       Portions of this text are reprinted and	reproduced  in	electronic  form  from	IEEE  Std
       1003.1,	2003  Edition,	Standard  for Information Technology -- Portable Operating System
       Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003  by
       the  Institute  of  Electrical  and  Electronics Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE  and  The  Open  Group
       Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003					 FGETS(P)


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