71 lines
1.3 KiB
Groff
71 lines
1.3 KiB
Groff
.\" @(#)putc.3s 6.2 (Berkeley) 11/6/85
|
|
.\"
|
|
.TH PUTC 3 "November 6, 1985"
|
|
.AT 3
|
|
.SH NAME
|
|
putc, putchar, fputc, putw \- put character or word on a stream
|
|
.SH SYNOPSIS
|
|
.nf
|
|
.ft B
|
|
#include <stdio.h>
|
|
|
|
int putc(int \fIc\fP, FILE *\fIstream\fP)
|
|
int putchar(int \fIc\fP)
|
|
int fputc(int \fIc\fP, FILE *\fIstream\fP)
|
|
int putw(int \fIw\fP, FILE *\fIstream\fP)
|
|
.ft R
|
|
.fi
|
|
.SH DESCRIPTION
|
|
.B Putc
|
|
appends the character
|
|
.I c
|
|
to the named output
|
|
.IR stream .
|
|
It returns the character written.
|
|
.PP
|
|
.BI Putchar( c )
|
|
is defined as
|
|
.BI putc( c ", stdout)\fR."
|
|
.PP
|
|
.B Fputc
|
|
behaves like
|
|
.BR putc ,
|
|
but is a genuine function rather than a macro.
|
|
.PP
|
|
.B Putw
|
|
appends word (that is,
|
|
.BR int )
|
|
.I w
|
|
to the output
|
|
.IR stream .
|
|
It returns the word written.
|
|
.B Putw
|
|
neither assumes nor causes special alignment in the file.
|
|
.SH "SEE ALSO"
|
|
.BR fopen (3),
|
|
.BR fclose (3),
|
|
.BR getc (3),
|
|
.BR puts (3),
|
|
.BR printf (3),
|
|
.BR fread (3).
|
|
.SH DIAGNOSTICS
|
|
These functions return the constant
|
|
.SM
|
|
.B EOF
|
|
upon error. Since this is a good integer,
|
|
.BR ferror (3)
|
|
should be used to detect
|
|
.B putw
|
|
errors.
|
|
.SH BUGS
|
|
Because it is implemented as a macro,
|
|
.B putc
|
|
treats a
|
|
.I stream
|
|
argument with side effects improperly. In particular
|
|
`putc(c,\ *f++);'
|
|
doesn't work sensibly.
|
|
.PP
|
|
Errors can occur long after the call to
|
|
.BR putc .
|