Identifiers in C++

Which of the following is true about identifiers in C++?

What is the correct rule for the first character of an identifier in C++?

Why are keywords not allowed to be used as identifiers in C++?

What is the significance of identifier uniqueness in C++?

Which of the following is NOT allowed in an identifier in C++?

Why should identifiers in C++ be chosen with valid and relevant names?

What happens if two identifiers differ only in their case in C++?

Which of the following is a reserved keyword in C++?

What is the purpose of keywords in C++?

Which method can be used to define constants in C++?

How many keywords are reserved in C++?

What does a 'literal' refer to in C++?

In C++, which preprocessor directive is used to define constant identifiers?

When using the 'string' keyword in C++, what are we actually defining?

Which special symbol in C++ is used to access class and struct members?

What is the purpose of the scope resolution operator (::) in C++?

What does the assignment operator '=' do in C++?

Identifiers in C++

The first character of an identifier in C++ can be a letter (A-Z or a-z), an underscore (_), or a universal character.
Keywords are not allowed to be used as identifiers in C++ because they are reserved words with specific meanings.
Identifier uniqueness is significant in C++ because it allows the compiler to differentiate between variables, functions, and other entities.

Rules for Identifiers in C++

Identifiers cannot start with a digit (0-9) in C++.
Identifiers cannot contain special characters except underscores (_).
Identifiers are case-sensitive, meaning that uppercase and lowercase letters are treated as distinct.

Keywords in C++

Keywords are reserved words with specific meanings in C++.
The purpose of keywords in C++ is to provide a set of predefined words that have a specific meaning in the language.

Defining Constants in C++

The #define preprocessor directive is used to define constant identifiers in C++.
The const keyword is also used to define constants in C++.

Literals in C++

A literal in C++ refers to a constant value that is directly represented in the code, such as numbers, characters, or strings.

Accessing Class and Struct Members in C++

The dot operator (.) is used to access class and struct members in C++.
The arrow operator (->) is used to access class and struct members through a pointer.

Scope Resolution Operator in C++

The scope resolution operator (::) is used to specify the scope of a identifier, such as a namespace or class.

Assignment Operator in C++

The assignment operator (=) is used to assign a value to a variable in C++.

Learn about identifiers in C++. Identify the rules and importance of using unique names for variables, functions, classes, and more within a program. Understand why keywords cannot be used as identifiers.