Structure of C Program

C PROGRAM  STRUCTURE:

Different programming languages have their own format of coding. The basic components of C program are

• main()
• pair of curly braces {,}
• declarations and statements
• user define functions   

Basic Concepts of C Language

CHARACTER SET:

Every programming language has its own set of characters. The characters used in C are divided into 3 categories

1. Digits
2. Alphabets
3. Special characters.

TABLE SHOWS DIFFERENT ALPHABETS , DIGITS , SPECIAL SYMBOLS USED IN C LANGUAGE:

ALPHABETS	UPPERCASE                    LOWERCASE	A-Z                             a-z
DIGITS	0-9

SPECIAL                CHARACTERS	, COMMA . PERIOD : COLON ; SEMICOLON 'APOSTROPHE             + PLUS SIGN - MINUS SIGN             *ASTERISK                      / SLASH % PERCENTAGE         SIGN   & AMPERSAND ^ CARAT ~ TILDE [ LEFT BRACKET ] RIGHT BRACKET { LEFT                         BRACES	" QUOTATION MARK ? QUESTION MARK                       ! EXPLAMATION   MARK                        _ UNDERSCORE # HASH = EQUAL SIGN | PIPELINE SIGN < LESS THAN > GREATER THAN \ BACKSLASH ( LEFT PARENTHESIS ) RIGHT PARENTHESIS } RIGHT BRACES

Characterstics of C Language

FEATURES OF C PROGRAMMING LANGUAGE:
C is powerful as well as popular programming language because of its certain characterstics which describe as

•  C is general purpose programming language.

•  C is a structured programming language.

•  Helps in development of system software

•  Ability to extend itself by adding functions to its library

•  Very less number of reserved words.

What is C Language and Its Need

INTRODUCTION ABOUT NEED OF "C LANGUAGE" 

Since computer is a machine which is used for many purposes such as manipulation of data , scientific calculations , business data processing etc. It was further expanded to various fields of applications. Based on the applications, different programming languages were developed. For example:

• FORTRAN was developed for scientific calculations

• PASCAL was developed for general applications

• COBOL was developed for business data processing

• PROLOG AND LISP was developed for artificial intelligence applications.