Originální popis anglicky:
getc - get a byte from a stream
Návod, kniha: POSIX Programmer's Manual
#include <stdio.h>
int getc(FILE *
stream);
The
getc() function shall be equivalent to
fgetc() , except that
if it is implemented as a macro it may evaluate
stream more than once,
so the argument should never be an expression with side effects.
Refer to
fgetc() .
Refer to
fgetc() .
The following sections are informative.
None.
If the integer value returned by
getc() is stored into a variable of type
char and then compared against the integer constant EOF, the comparison
may never succeed, because sign-extension of a variable of type
char on
widening to integer is implementation-defined.
Since it may be implemented as a macro,
getc() may treat incorrectly a
stream argument with side effects. In particular,
getc(*
f++) does not necessarily work as expected. Therefore, use
of this function should be preceded by
"#undef getc" in such
situations;
fgetc() could also be used.
None.
None.
fgetc() , the Base Definitions volume of
IEEE Std 1003.1-2001,
<stdio.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
