Материал из C\C++ эксперт
| C |
|---|
|
The iso646.h header file is part of the C standard library. It was added to this library in a 1995 amendment to the C90 standard. It defines a number of macros which allow programmers to use C language bitwise and logical operators, which, without the header file, cannot be quickly or easily typed on some international and non-QWERTY keyboards.
Макросы
The iso646.h header defines the following 11 macros as stated below:
| Макрос
|
Определен как
|
| and |
&&
|
| and_eq |
&=
|
| bitand |
&
|
| bitor |
|
|
| compl |
~
|
| not |
!
|
| not_eq |
!=
|
| or |
||
|
| or_eq |
|=
|
| xor |
^
|
| xor_eq |
^=
|
These identifiers are operator keywords in the ISO C++ programming language and do not require the inclusion of a header file. For consistency, the C++98 standard provides the header <ciso646>. However the latter file has no effect, being empty.[1]
