G10 CS Programming: Variables & Datatypes

A positive or negative whole number used in mathematical operations

• Integer

• Boolean

• String

• Character

• Float

A positive or negative number that allows decimals and fractions in mathematical operations.

• Integer

• Boolean

• String

• Character

• Real

A data type that accepts only two values: TRUE or FALSE.

• Integer

• Boolean

• String

• Character

• Real

A variable or constant that allows several characters in length.

• Integer

• Boolean

• String

• Character

• Real

A variable or constant that allocates space for a character.

• Integer

• Boolean

• String

• Character

• Real

are labels that are used to represent values stored in computer memory that remain unchanged during the execution of a program.

are labels that are used to represent values stored in computer memory. The value of the variable can be changed during execution.

___________ of variables in a program is essential as the correct amount of space in memory is allocated by the compiler.

The value of a variable can be changed during program execution.

• True

• False

The value of a variable cannot be changed during program execution.

• True

• False