putchar man page on BSDOS

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PUTC(3)			    BSD Programmer's Manual		       PUTC(3)

NAME
     fputc, putc, putc_unlocked, putchar, putchar_unlocked, 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
     putc_unlocked(int c, FILE *stream);

     int
     putchar(int c);

     int
     putchar_unlocked(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().

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

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

     The putc_unlocked() and putchar_unlocked() are equivalent to putc() and
     putchar() respectively except that they are not implemented in a thread-
     safe manner.  They are intended for use with flockfile() and
     funlockfile() which provide thread-safe synchronization.

     The putc_unlocked() and putchar_unlocked() are implemented as macros that
     expand in-line. They may evaluate stream more than once, so arguments
     given to putc_unlocked() and putchar_unlocked() should not be expressions
     with potential side effects.

RETURN VALUES
     The functions, fputc(), putc(), putc_unlocked(), putchar(), and
     putchar_unlocked() return the character written.  If an error occurs, the
     value EOF is returned.  The putw() function returns 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),  flockfile(3),  funlockfile(3),
     stdio(3),	pthreads(3)

STANDARDS
     The functions fputc(), putc(), and putchar(), conform to ANSI C
     X3.159-1989 (``ANSI C '').

     A function putw() function appeared in Version 6 AT&T UNIX.

     The putc_unlocked and putchar_unlocked functions conform to IEEE
     Std1003.1c (``POSIX'').

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

BSDI BSD/OS			 June 4, 1993				     2
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