Variables, Values, and Constants Quiz

What is a variable in programming?

• A constant value that cannot be changed

• A predefined keyword in C++

• A value stored in a program's execution

• A memory location with a name and a type

What are the contents of a variable referred to as?

• Value

• Identifier

• Type

• Keyword

What does the assignment operator in C++ do?

• Deletes a variable

• Copies the value of a variable

• Declares a new variable

• Increments a variable

What is a constant in programming?

• A keyword in C++

• A variable that changes its value

• A storage entity whose value cannot be changed

• A temporary value in a program

What are the components of a C++ program?

• Values and literals

• Source code and tokens

• Comments and keywords

• Variables and constants

What is the purpose of an identifier in C++?

• To store a value

• To declare a variable

• To define a constant

• To name an entity

What is the size of a bool data type in C++?

• 4 bytes

• 2 bytes

• 8 bytes

• 1 byte

How can you define a string variable in C++?

• Using the 'str' keyword

• Using the 'string' class

• Including the header file

• Declaring it as an array of characters

What is the purpose of the void data type in C++?

• To show the lack of any value

• To define a constant value

• To represent a value that can be true or false

• To store floating-point numbers

What is the default size of a floating-point literal in C++?

• int

• long double

• float

• double