Identifiers are used as the general terminology for the names of variables, functions and arrays. These are user defined names consisting of arbitrarily long sequence of letters and digits with either a letter or the underscore(_) as a first character.
There are certain rules that should be followed while naming c identifiers:
Some examples of c identifiers:
|Temp.txt||Invalid as it contains special character other than the underscore|
|while||Invalid as it is a keyword|
|1age||Invalid as it started from digits|