Xinu7/man/man2/putc.2

.TH PUTC 2
.SH NAME
putc \- device independent character output routine
.SH SYNOPSIS
.nf
.B int putc(dev, ch)
.B int dev;
.B char	ch;
.fi
.SH DESCRIPTION
.I Putc
will write the character
.I ch
on the I/O device given by
.I dev.
It returns SYSERR if
.I dev
is incorrect, OK otherwise.
.PP
By convention,
.I printf
calls
.I putc
on device CONSOLE to write formatted output.
Usually CONSOLE is device zero.
.SH SEE ALSO
close(2), control(2), getc(2), open(2), read(2), seek(2), write(2)