This manual page is part of the POSIX Programmers Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
Printing to Standard Output
puts - put a string on standard output
int puts(const char *s);
The puts() function shall write the string pointed to by s, followed by a <newline>, to the standard output stream stdout. 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().
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.
Refer to fputc() .
The following sections are informative.
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); ...
The puts() function appends a <newline>, while fputs() does not.
fopen() , fputs() , putc() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.h>
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 original Standard can be obtained online at http://www.opengroup.org/unix/online.html .
|IEEE/The Open Group||PUTS (P)||2003|