NAME
getchar — get a
byte from a stdin stream
SYNOPSIS
#include
<stdio.h>
int getchar(void);
DESCRIPTION
[CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 (“POSIX.1”) defers to the ISO C standard.
The getchar () function shall be
equivalent to getc (
stdin).
RETURN VALUE
Refer to fgetc(3).
ERRORS
Refer to fgetc(3).
EXAMPLES
None.
APPLICATION USAGE
If the integer value returned by getchar
() 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.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
getc(3), the Base Definitions volume of IEEE Std 1003.1-2001 (“POSIX.1”), <stdio.h>
CHANGE HISTORY
First released in Issue 1. Derived from Issue 1 of the SVID.
End of informative text. footer end