Note for Programming in C - C By Archit Kaushal
- Programming in C - C
- Note
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Basics of ‘C’
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General Aspect of ‘C’ C was originally developed in the 1970s, by Dennis Ritchie at Bell Telephone Laboratories, Inc. C is a High level , general –purpose structured programming language. Instructions of C consists of terms that are very closely same to algebraic expressions, consisting of certain English keywords such as if, else, for ,do and while C contains certain additional features that allows it to be used at a lower level , acting as bridge between machine language and the high level languages. This allows C to be used for system programming as well as for applications programming
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The Character set of ‘C’ C language consist of some characters set, numbers and some special symbols. The character set of C consist of all the alphabets of English language. C consist of Alphabets a to z, A to Z Numeric 0,1 to 9 Special Symbols {,},[,],?,+,-,*,/,%,!,;,and more The words formed from the character set are building blocks of C and are sometimes known as tokens. These tokens represent the individual entity of language. The following different types of token are used in C 1) Identifiers 2)Keywords 3)Constants 4) Operators 5)Punctuation Symbols
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Identifiers • A 'C' program consist of two types of elements , user defined and system defined. Idetifiers is nothing but a name given to these eleme • nts. • An identifier is a word used by a programmer to name a variable , function, or label. • identifiers consist of letters and digits, in any order, except that the first charecter or lable. • Identifiers consist of letters and digits if any order,except that the first charecter must be letter. • Both Upper and lowercase letters can be used
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