Define the identifiers of c language, Computer Engineering

Define the Identifiers of c language?

In C the names of the functions, variables and arrays and various other user - defined items are called identifiers. The first character of an identifier must be an underscore or a letter and subsequent characters must be either letter, digits or underscore. Both lower case and upper case letters are permitted.

A few illustration of identifiers are

Abc            tax_rate             _temperature K!             Place TABLE

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