Identifiers in C

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C Programming Identifiers

Identifiers are fundamental building blocks of a program and are used as the general terminology for the names given to different parts of program viz. variables, functions array structures etc.

Rules of naming Identifiers :

  • Identifiers can have alphabets, digits and underscore sign characters.
  • They must not be a keyword or boolean literal or null literal.
  • They must not begin with a digit.
  • They can be of any length.
  • C is case sensitive i.e., upper-case letters and lower-case letters are treated differently.

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