Type Of Tokens

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 A compiler designer prescribes rules for making a program using statements. The Smallest unit in a program/statement is called a token. The compiler identifies them as tokens. Tokens are classified in the following types:-

  1. Keyword : Key words are reserved by the compiler. There are 32 keywords(ANSI Standard).
  2. Variables : These are user defined. Any number of variables can be defined.'
  3. Constants : Constants are assigned to variables.
  4. Operators : Operators are of different types and are used in expression.
  5. Special Characters : These characters are used in different declarations in C.
  6. Strings : A sequence of characters.

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