PUTCHAR(3)

NAME
4.46 `putchar'--write a character (macro)

SYNOPSIS
     #include <stdio.h>
     int putchar(int CH);
     int _putchar_r(struct _reent *REENT, int CH);

DESCRIPTION
`putchar' is a macro, defined in `stdio.h'. `putchar' writes its argument to the standard output stream, after converting it from an `int' to an `unsigned char'.
   The alternate function `_putchar_r' is a reentrant version. The extra argument REENT is a pointer to a reentrancy structure.

RETURNS
If successful, `putchar' returns its argument CH. If an error intervenes, the result is `EOF'. You can use ``ferror(stdin)'' to query for errors.

PORTABILITY
ANSI C requires `putchar'; it suggests, but does not require, that `putchar' be implemented as a macro.
   Supporting OS subroutines required: `close', `fstat', `isatty', `lseek', `read', `sbrk', `write'.

SEE ALSO
putchar is part of the library. The full documentation for is maintained as a Texinfo manual. If info and are properly installed at your site, the command

    info

will give you access to the complete manual.