N5 Computing Science: Program Constructs

This is the pseudocode for a simple guessing game.

Type a line number where a variable declaration takes place...

Answer explanation

Declarations are where variables are first mentioned in a program. This may or may not also involve assigning them an initial value.

This is the pseudocode for a simple guessing game.

Type the name of an integer variable ...

Answer explanation

Integer variables can contain negative or positive whole numbers, up to a certain size depending on the number of bits used to store them.

This is the pseudocode for a simple guessing game.

Type the name of a real/float variable ...

Answer explanation

Real variables can store Real numbers with a fractional part, like 3.14. In Python they are called "floats."

This is the pseudocode for a simple guessing game.

Type the name of a Boolean variable ...

Answer explanation

Boolean vriables can store a Boolean value - True or False. There are only two possible values.

This is the pseudocode for a simple guessing game.

Type how many variables are used in the program ...

Answer explanation

Variables are used to store values in a computer program, for later recall. They are usually given meaningful coded names to make them recogniseable.

This is the pseudocode for a simple guessing game.

Type the name of a variable that acts like a flag or sentinel value ...

Answer explanation

A flag or sentinel variable is a (usually) Boolean variable that is used to indicate some condition or event having taken place in a program. When the variable changes its value it signals the event having happened.

This is the pseudocode for a simple guessing game.

Type a line number where a conditional loop starts ...

Answer explanation

A conditional loop is a loop that repeats for an undetermined number of times until a certain condition becomes false (or true).

This is the pseudocode for a simple guessing game.

Type a line number where a selection statement starts ...

Answer explanation

A selection statement is used to make a decision between different possible courses of action in a program. It is usually preceded by the 'if' keyword.

This is the pseudocode for a simple guessing game.

How many conditional loops are there?

Answer explanation

Conditional loops can take two forms:

while <condition>

do <something>

or

repeat

<something>

until <condition>

This is the pseudocode for a simple guessing game.

How many fixed loops are there?

Answer explanation

A fixed loop is a loop that repeats for a pre-determined number of times. Also called a count-controlled loop.