1GETCHAR(3P)                POSIX Programmer's Manual               GETCHAR(3P)
2
3
4

PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
10

NAME

12       getchar — get a byte from a stdin stream
13

SYNOPSIS

15       #include <stdio.h>
16
17       int getchar(void);
18

DESCRIPTION

20       The functionality described on this reference page is aligned with  the
21       ISO C  standard.  Any  conflict between the requirements described here
22       and the ISO C standard is unintentional. This  volume  of  POSIX.1‐2017
23       defers to the ISO C standard.
24
25       The getchar() function shall be equivalent to getc(stdin).
26

RETURN VALUE

28       Refer to fgetc().
29

ERRORS

31       Refer to fgetc().
32
33       The following sections are informative.
34

EXAMPLES

36       None.
37

APPLICATION USAGE

39       If the integer value returned by getchar() is stored into a variable of
40       type char and then compared against the integer constant EOF, the  com‐
41       parison may never succeed, because sign-extension of a variable of type
42       char on widening to integer is implementation-defined.
43

RATIONALE

45       None.
46

FUTURE DIRECTIONS

48       None.
49

SEE ALSO

51       Section 2.5, Standard I/O Streams, getc()
52
53       The Base Definitions volume of POSIX.1‐2017, <stdio.h>
54

56       Portions of this text are reprinted and reproduced in  electronic  form
57       from  IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
58       table Operating System Interface (POSIX), The Open Group Base  Specifi‐
59       cations  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of
60       Electrical and Electronics Engineers, Inc and The Open Group.   In  the
61       event of any discrepancy between this version and the original IEEE and
62       The Open Group Standard, the original IEEE and The Open Group  Standard
63       is  the  referee document. The original Standard can be obtained online
64       at http://www.opengroup.org/unix/online.html .
65
66       Any typographical or formatting errors that appear  in  this  page  are
67       most likely to have been introduced during the conversion of the source
68       files to man page format. To report such errors,  see  https://www.ker‐
69       nel.org/doc/man-pages/reporting_bugs.html .
70
71
72
73IEEE/The Open Group                  2017                          GETCHAR(3P)
Impressum