Faizan Ali
contact:- 03235356409
email:- ali.faizan0009@hotmail.com
THE WAORD THAT ARE GIVENT TO ANY ENTITY OR VERIABLE, OR DATA
TYPE ARE CALLED IDENTIFERS OR USER
DEFINE WORDS.” THESE WORDS DOES change Data behavior in any way.
Before using
identifier simply remember following rules.
1.
Characters:
(A to Z, or a to z). digits (0 to 9) and only special
character _ (under score) can be used as identifier.
2.
Unique
Words:
Identifier must be unique
in a program. e.g student roll no.
3.
Case-Sensitive:
In C/C++ user have the freedom to use both upper or lower
case. But CC++ is case-sensitive ( Ball, ball, or bAIll ) are three different
identifiers.
4.
Space
No embedded blank “Space” is allowed. In simple word space is
not allowed in an identifier.
5.
Length:
The identifier can be of any length. In c at least the first
31 characters will be significant, whereas, in c++ there is no limit to the
length of an identifier.
6.
Can’t
use Reserved words
Reserved words can’t be used as an identifier
0 comments:
Post a Comment