GETC(3) OpenBSD Programmer's Manual GETC(3)NAME
fgetc, getc, getchar, getw - get next character or word from input stream
SYNOPSIS
#include <stdio.h>
int
fgetc(FILE *stream);
int
getc(FILE *stream);
int
getchar(void);
int
getw(FILE *stream);
DESCRIPTION
The fgetc() function obtains the next input character (if present) from
the stream pointed at by stream, or the next character pushed back on the
stream via ungetc(3).
The getc() function acts essentially identically to fgetc(), but is a
macro that expands in-line.
The getchar() function is equivalent to getc() with the argument stdin.
The getw() function obtains the next int (if present) from the stream
pointed at by stream.
RETURN VALUES
If successful, these routines return the next requested object from the
stream. If the stream is at end-of-file or a read error occurs, the
routines return EOF. The routines feof(3) and ferror(3) must be used to
distinguish between end-of-file and error. If an error occurs, the
global variable errno is set to indicate the error. The end-of-file
condition is remembered, even on a terminal, and all subsequent attempts
to read will return EOF until the condition is cleared with clearerr(3).
SEE ALSOferror(3), fopen(3), fread(3), putc(3), ungetc(3)STANDARDS
The fgetc(), getc(), and getchar() functions conform to ANSI X3.159-1989
(``ANSI C'').
BUGS
Since EOF is a valid integer value, feof(3) and ferror(3) must be used to
check for failure after calling getw().
Since the size and byte order of an int may vary from one machine to
another, getw() is not recommended for portable applications.
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9
