PUTC(3)                        Library Routines                        PUTC(3)

NAME

       fputc, putc, putchar, putw - output a character or word to a stream

SYNOPSIS

       #include <stdio.h>

       int fputc (int c, FILE *stream);
       int putc (int c, FILE *stream);
       int putchar (int c);
       int putw (int w, FILE *stream);

DESCRIPTION

       The  fputc  function writes the character c (converted to an ``unsigned
       char'') to the output stream pointed to by stream.

       Putc acts essentially identically to fputc, but is a macro that expands
       in-line.  It  may evaluate stream more than once, so arguments given to
       putc should not be expressions with potential side effects.

       Putchar is identical to putc with an output stream of stdout.

       The putw function writes the specified int to the named output stream.

RETURN VALUES

       The functions, fputc, putc and putchar return  the  character  written.
       If  an  error occurs, the value EOF is returned.  The putw function re‐
       turns 0 on success; EOF is returned if a write error occurs, or  if  an
       attempt is made to write a read-only stream.

SEE ALSO

       ferror(3), fopen(3), getc(3), stdio(3)

STANDARDS

       The  functions fputc, putc, and putchar, conform to ANSI/C.  A function
       putw function appeared in Version 6 AT&T UNIX.

BUGS

       The size and byte order of an int varies from one machine  to  another,
       and putw is not recommended for portable applications.



GNO                            15 September 1997                       PUTC(3)