‘C’ Character Set:

C uses the character set as the building block to form the basic program elements such as variables, identifiers, escape sequences, constants, expressions etc. C uses the ASCII (American Standard Code for Information Interchange) Character set. Due to close analogy with English language, C’s character set includes uppercase letters (A to Z), lowercase letters (a to z), the digits (0 to 9) and certain special symbols which are used to form the basic program elements. All members of the character set have different usage at different places. The main limitation of ASCII character set is that it cannot represent more than 256 characters because it uses 1-byte to represent a character. It is unable to support some languages like Chinese, Japanese that have more than 256 characters.

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