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`putchar'--write a character (macro)
int putchar(int CH);
int _putchar_r(void *REENT, int CH);
`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.
If successful, `putchar' returns its argument CH. If an error
intervenes, the result is `EOF'. You can use ``ferror(stdin)'' to
query for errors.
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'.
Created Mon Nov 8 17:42:54 2004 on tillpc with info_to_html version 0.9.6.