PUTC(3) BSD Library Functions Manual PUTC(3)

NAME
     ffppuuttcc, ppuuttcc, ppuuttccuunnlloocckkeedd, ppuuttcchhaarr, ppuuttcchhaarruunnlloocckkeedd, ppuuttww - output a
     character or word to a stream

LLIIBBRRAARRYY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##iinncclluuddee <>

     int
     ffppuuttcc(int c, FILE *stream);

     int
     ppuuttcc(int c, FILE *stream);

     int
     ppuuttccuunnlloocckkeedd(int c, FILE *stream);

     int
     ppuuttcchhaarr(int c);

     int
     ppuuttcchhaarruunnlloocckkeedd(int c);

     int
     ppuuttww(int w, FILE *stream);

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

     The ppuuttcc() macro acts essentially identically to ffppuuttcc(), but is a macro
     that expands in-line.  It may evaluate stream more than once, so argu-
     ments given to ppuuttcc() should not be expressions with potential side
     effects.

     The ppuuttcchhaarr() function is identical to ppuuttcc() with an output stream of
     stdout.

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

     The ppuuttccuunnlloocckkeedd() and ppuuttcchhaarruunnlloocckkeedd() functions are equivalent to
     ppuuttcc() and ppuuttcchhaarr() respectively, except that the caller is responsible
     for locking the stream with flockfile(3) before calling them.  These
     functions may be used to avoid the overhead of locking the stream for
     each character, and to avoid output being interspersed from multiple
     threads writing to the same stream.

RETURN VALUES
     The functions, ffppuuttcc(), ppuuttcc(), ppuuttcchhaarr(), ppuuttccuunnlloocckkeedd() and
     ppuuttcchhaarruunnlloocckkeedd() return the character written.  If an error occurs, the
     value EOF is returned.  The ppuuttww() 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), flockfile(3), fopen(3), getc(3), putwc(3), stdio(3)

STANDARDS     The functions ffppuuttcc(), ppuuttcc(), and ppuuttcchhaarr(), conform to ISO/IEC
     9899:1990 (``ISO C90'').  The ppuuttccuunnlloocckkeedd() and ppuuttcchhaarruunnlloocckkeedd()
     functions conform to IEEE Std 1003.1-2001 (``POSIX.1'').  A function
     ppuuttww() function appeared in Version 6 AT&T UNIX.

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

BSD                            January 10, 2003                            BSD