Identifier, Variable & Constant

What is a valid C++ identifier?

• • 2variable

• • variable_name

• • variable-name

• • @variable

• Which of the following is a correct way to declare an integer variable in C++?

• int 1number;

• integer num;

• int number;

• num int;

What keyword is used to define a constant in C++?

• constant

• const

• fixed

• static

How do you initialize a variable in C++?

• int num = 10;

• int num : 10;

• num = int 10;

• int = num 10;

What will be the output of the following code snippet?

• 0

• 5

• value

• error

What will happen if you try to modify a 'const' variable in C++?

• The code will compile successfully

• The value will be changed

• An error will occur

• The program will crash

Which of the following correctly represents a floating-point constant in C++?

• 3.14

• 3.14f

• 3.14F

• All correct