putc, putchar, fputc, putw - put character or word on a stream
int putc(c, stream)
Putc appends the character c to the named output stream. It returns
the character written.
Putchar(c) is defined as putc(c, stdout).
Fputc behaves like putc, but is a genuine function rather than a macro.
It may be used to save on object text.
Putw appends word (i.e. int) w to the output stream. It returns the
word written. Putw neither assumes nor causes special alignment in the
The standard stream stdout is normally buffered if and only if the out-
put does not refer to a terminal; this default may be changed by set-
buf(3). The standard stream stderr is by default unbuffered uncondi-
tionally, but use of freopen (see fopen(3)) will cause it to become
buffered; setbuf, again, will set the state to whatever is desired.
When an output stream is unbuffered information appears on the destina-
tion file or terminal as soon as written; when it is buffered many
characters are saved up and written as a block. Fflush (see fclose(3))
may be used to force the block out early.
fopen(3), fclose(3), getc(3), puts(3), printf(3), fread(3)
These functions return the constant EOF upon error. Since this is a
good integer, ferror(3) should be used to detect putw errors.
Because it is implemented as a macro, putc treats a stream argument
with side effects improperly. In particular `putc(c, *f++);' doesn't