A C++ identifier is a name used to identify a variable, function, class, module, or any other user-defined item. An identifier starts with a letter A to Z or a to z or an underscore (_) followed by zero or more letters, underscores, and digits (0 to 9).
C++ does not allow punctuation characters such as @, $, and % within identifiers. C++ is a case sensitive programming language. Thus Manpower and manpower are two different identifiers in C++.
Here are some examples of acceptable identifiers:
mohd zara abc move_name a_123
myname50 _temp j a23b9 retVal
Posted By:-Cplusplusprogramming