Identifiers





Identifiers :

Identifiers refer to the naming of programming elements like variables, functions, arrays, structure etc...

Rules for legal identifiers :

  • They can be a set of alphabet, digits, underscore .
  • They must not begin with digit .
  • Uppercase and Lowercase letters are distinct .
  • The number of characters in the variable that are recognized differs from compiler to compiler.
  • An identifier can not be the same as C keyword .
Example of legal identifiers :

arena,s_count
marks40
class_one

Example of illegal identifiers :

1sst
2nd number
oh!god
start...end

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