Question

What is an identifier ? How is it useful in C program ?

Answer 1

Explanation:

An identifier is a string of alphanumeric character that begins with an alphabetic character. It is used to identify variables, functions and arrays in C program.

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Answer 2

In C programming, an identifier is a user assigned function or variable.

Explanation:

• An identifier is a series of characters with underscores.
• A programmer uses identifiers to refer certain functions or variables or structures or other elements.
• In C program, certain keywords such as “int” or “break” have specific function. So, those words are not accepted as identifiers.
• Some of the rules are established to create an identifier to avoid confusions. The rules include no two consecutive underscores, should not have more than 115 characters, and so on.
• The keywords are used as identifiers with ‘@’ in front of the words. This type of identifiers are called verbatim identifiers which are strongly discouraged by the programmers.