fgetc, getc, getchar, getw - get next character or word from
The fgetc() function obtains the next input character (if
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
pointed at by stream.
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-offile condition
is remembered, even on a terminal, and all subsequent
read will return EOF until the condition is cleared with
ferror(3), fopen(3), fread(3), putc(3), ungetc(3)
The fgetc(), getc(), and getchar() functions conform to ANSI
Since EOF is a valid integer value, feof(3) and ferror(3)
must be used to
check for failure after calling getw(). The size and byte
order of an
int varies from one machine to another, and getw() is not
OpenBSD 3.6 June 4, 1993
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