PUTS(3P)                                            POSIX Programmer's Manual                                           PUTS(3P)



PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (con-
       sult the corresponding Linux manual page for details of Linux behavior), or the  interface  may  not  be  implemented  on
       Linux.

NAME
       puts - put a string on standard output

SYNOPSIS
       #include <stdio.h>

       int puts(const char *s);


DESCRIPTION
       The  puts()  function shall write the string pointed to by s, followed by a <newline>, to the standard output stream std-
       out. The terminating null byte shall not be written.

       The st_ctime and st_mtime fields of the file shall be marked for update between the successful execution  of  puts()  and
       the next successful completion of a call to fflush() or fclose() on the same stream or a call to exit() or abort().

RETURN VALUE
       Upon successful completion, puts() shall return a non-negative number. Otherwise, it shall return EOF, shall set an error
       indicator for the stream,  and errno shall be set to indicate the error.

ERRORS
       Refer to fputc().

       The following sections are informative.

EXAMPLES
   Printing to Standard Output
       The following example gets the current time, converts it to a string using localtime() and asctime(), and  prints  it  to
       standard output using puts(). It then prints the number of minutes to an event for which it is waiting.


              #include <time.h>
              #include <stdio.h>
              ...
              time_t now;
              int minutes_to_event;
              ...
              time(&now);
              printf("The time is ");
              puts(asctime(localtime(&now)));
              printf("There are %d minutes to the event.\n",
                  minutes_to_event);
              ...

APPLICATION USAGE
       The puts() function appends a <newline>, while fputs() does not.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       fopen(), fputs(), putc(), 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,  Copy-
       right (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.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                      PUTS(3P)