Identifiers are the names assigned to any variable or a constant, which is used to identify the variables or constants in the C language.
Rules for Constructing Variable Names or identifiers name:
The rules to write an identifier name in C language are as follows:
- A variable name is any combination alphabets, digits or underscores.
- The first character in the variable name must be an alphabet or underscore.
- No commas or blanks are allowed within a variable name.
- No special symbol other than an underscore can be used in a variable name.