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INTRODUCTION OF "C " LANGUAGE :
by yaswanth adireddy
"C LANGUAGE " is a simple and easiest computer language since many days after the some leading computer languages .
INTRODUCTION
c - language is develeped by "DENNIS RITCHIE" in 1972 . since it was 45 years old language in the computer History . After these many yesrs people are eagerly wants to learn c language because, it has some various feautures which are useful for better understanding the computer language .
The "c " language file is saved in the extesion on ".c or .h" . using "c "language we can manage any application regarding software.
Now -A-Days every student in engineering or less than engineering are pursuiring the c language because it has a drastical use on softaware side.
C-TOKENS
TYPES OF C - TOKENS :
1) KEYWORDS
2)IDENTIFIERS
3)OPERATORS
4)CONSTANTS
5)SPECIFIC SYMBOLS
6)STRINGS
1) KEYWORDS :
IN c language their exists 32 keywords each keywords has its unique properties.
* keywords is predefined words
EX : int,char,if,else.....
2)IDENTIFIERS :
THE Element in program are specified a naming conventions is known as identifiers.
Rules for Identifiers :
* first character must be a aphabet/under score.
* must consists af only letters , digits ,underscore.
* only first 32 characters are significant.
* cannot a keyword.
* must not contain white space.
CONSTANTS :
* the values which are under changes throughout the program is known as constant.
just follow the flow chart :
constant
!
!
-------------------------------------------------------------------------------
! !
numeric constant character constant
/ \ / \
/ \ / \
interger real
constants constants character strings
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