C++ Function Output and Keyword Purpose

C++ Basics

• The 'void' keyword in a C++ function declaration indicates that the function does not return any value.
• The purpose of the 'void' keyword is to specify that the function does not return any value.
• The 'void' keyword does not indicate the absence of parameters, but rather the absence of a return value.

Valid C++ Identifiers

• A valid C++ identifier is a name given to a variable, function, or label.
• C++ identifiers must start with a letter (a-z or A-Z) or an underscore (_).
• C++ identifiers cannot start with a digit (0-9).

'const' Keyword

• When used in a C++ function declaration, the 'const' keyword signifies that the function does not modify the object it is called on.
• The 'const' keyword is used to specify that a function is a "read-only" function, meaning it does not modify the state of the object.