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