Identifiers In C Language | Explain Identifiers In C Language | Identifiers In C Language In Hindi

     Identifiers In C Language

Identifier refers to name given to entities such as variables, function, structures etc.

Identifier must be unique. In identifier we can use character, digit, under score  in a program.

Rules for constructing C identifiers

1   .     A valid identifier can have letters and digits or underscore.

2   .     The first  letter of identifier can be either a letter or an underscore.

3  .     You cannot use keyword as identifiers.

4  . There is no rule on how long an identifier can be.how you may run into problem in some compilers if the identifier is longer than 31 characters.

Fig: Identifier In C