putc(3) - NetBSD Manual Pages

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


NAME

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


LIBRARY

     Standard C Library (libc, -lc)


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 ex-
     pands 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 writ-
     ten.  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), stdio(3)


STANDARDS

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

NetBSD 1.5.1                     June 4, 1993                                1