Chapter 9, Problem 76E

Explanation of Solution

a.

Python language identifier:

The number of identifiers in the Python language is “6”.

An identifier in the Python language is used to identify an object, class, function, or variable.

• An identifier’s name begins with a character or letter “a to z” or “A to Z” or an underscore “_” followed by letters, and numbers or digits 0 to 9, underscores...

Explanation of Solution

b.

VB.NET language identifier:

The number of identifiers in the VB.NET language is “6”.

• An identifier in the VB.NET language is used to identify a variable.
• An identifier begins with a character or letter “a to z” or “A to Z” or an underscore “_” followed by letters, and numbers or digits 0 to 9, underscores...

Explanation of Solution

c.

C++ language identifier:

The number of identifiers in the C++ language is “6”.

• An identifier in the C++ language is used to identify a structure, class, union, or variable.
• An identifier begins with a character or letter “a to z” or “A to Z” or an underscore “_”.
• It does not allow C++ keyword as an identifier and is case sensitive language.
• It does not begin with the digits.
• So, the identifiers listed below are all the valid identifiers in C++ language...