posix man page for strlen

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

NAME
       strlen - get string length

SYNOPSIS
       #include <string.h>

       size_t strlen(const char *s);

DESCRIPTION
       The strlen() function shall compute the number of bytes in the string to which s points, not including the terminating null byte.

RETURN VALUE
       The strlen() function shall return the length of s; no return value shall be reserved to indicate an error.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
   Getting String Lengths
       The following example sets the maximum length of key and data by using strlen() to get the lengths of those strings.

	      #include <string.h>
	      ...
	      struct element {
		  char *key;
		  char *data;
	      };
	      ...
	      char *key, *data;
	      int len;

	      *keylength = *datalength = 0;
	      ...
	      if ((len = strlen(key)) > *keylength)
		  *keylength = len;
	      if ((len = strlen(data)) > *datalength)
		  *datalength = len;
	      ...

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       The Base Definitions volume of IEEE Std 1003.1-2001, <string.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- 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 original Standard can  be  obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003								 STRLEN(P)