Programming Concepts

Question 1

What is a variable?

Accepted Answer

A named store whose value can change while the program runs — A variable is a named storage location whose value can change during execution.

Question 2

Which data type stores only TRUE or FALSE?

Accepted Answer

Boolean — A Boolean data type can hold only the values TRUE or FALSE.

Question 3

Which control structure makes a choice using IF?

Accepted Answer

Selection — Selection chooses between actions using conditions such as IF or CASE.

Question 4

A FOR loop is an example of which structure?

Accepted Answer

Count-controlled iteration — A FOR loop repeats a fixed number of times, so it is count-controlled iteration.

Question 5

What does totalling do?

Accepted Answer

Keeps a running sum by adding each value — Totalling adds each value to a total to build a running sum.

Question 6

How does counting differ from totalling?

Accepted Answer

Counting adds one each time; totalling adds a value — A counter increases by one, while a total increases by each data value.

Question 7

A named value that stays the same throughout a program is a:

Accepted Answer

Constant — A constant is a named value that does not change while the program runs.

Question 8

Which data type would best store a person's name?

Accepted Answer

String — A string stores text such as a name made of several characters.

Question 9

Which structure repeats a block while a condition is true?

Accepted Answer

WHILE loop — A WHILE loop is condition-controlled and repeats while its condition stays true.

Question 10

What does sequence mean in programming?

Accepted Answer

Instructions run in order, one after another — Sequence means the statements are carried out in the order they are written.