ICTPRG302 Week 1Variables and Data Types

What is a variable?

• A container that stores values that can change during program execution

• A fixed value that cannot be changed

• A data type used to represent text data

• A logical data type with only two possible values

What is the purpose of variables?

• To store and manipulate data values in a program

• To represent text data in programming

• To perform logical operations

• To declare the intended data type for a variable

What is a string data type used for?

• Representing text data in programming

• Storing whole numbers

• Storing decimal numbers

• Performing logical operations

What are integers?

• Whole numbers that can be positive, negative or zero

• Decimal numbers with floating point

• Double precision floating point numbers

• Logical data type with only two possible values

What are floats?

• Decimal numbers with floating point

• Whole numbers that can be positive, negative or zero

• Double precision floating point numbers

• Logical data type with only two possible values

What are doubles?

• Double precision floating point numbers allowing more digits

• Decimal numbers with floating point

• Whole numbers that can be positive, negative or zero

• Logical data type with only two possible values

What is a boolean data type used for?

• Representing binary logic and conditions in code

• Storing text data

• Storing whole numbers

• Performing logical operations