AQA GCSE Computer Science 3.2 Programming overview quiz quiz

Real

Integer

Boolean

Character

A variable is fixed; a constant can change

A variable can change; a constant is fixed

Both can change

Neither can hold a value

$2$

$3$

$3.4$

$5$

WHILE loop

REPEAT UNTIL loop

FOR loop

IF statement

$20$

$24$

$9$

$14$

By its index (position number)

By field name

By specifying its data type, such as integer

By its length

A procedure returns a value; a function does not

They are identical

A function returns a value; a procedure does not

A function cannot take parameters

Anywhere in the program, including inside any other subroutine

Only in the main program

Only inside loops

Only inside the subroutine where it is created

Joins them into one longer string

Finds their length

Converts both of them into integer numbers

Removes spaces

Files are always faster to read from than variables are

So the data persists after the program ends

Variables cannot store text

Files do not need to be closed

It always makes the finished program much longer overall, which is helpful

It removes the need for variables

Each subroutine can be tested separately, making faults easier to find

It prevents the use of loops

A OR B

NOT A

A XOR B

A AND B