Highlands Computing: Y9 W02 Homework

What is the primary purpose of selection in algorithms?

• To store data

• To perform calculations

• To make decisions or ask questions

• To display output

Which instructions are commonly used to represent selection in algorithms?

• Add and Subtract

• For and While

• Print and Scan

• If, Then, and Else

Which of the following is NOT a part of an if-then-else statement?

• Else

• Then

• Loop

• If

What does the 'if' part of an if-then statement do?

• It repeats a block of code

• It stores a value

• It stops the algorithm

• It causes one path to be followed if the condition is true

What is the main function of the 'then' part in an if-then statement?

• To repeat a block of code

• To display output

• To store data

• To execute a block of code if the condition is true

Which part of an if-then-else statement is executed if the condition is true?

• None of the above

• If

• Then

• Else

What happens if the condition in an 'if' statement is false?

• The 'else' part is executed

• The condition is ignored

• The algorithm stops

• The 'if' part is executed again

In what scenario would the 'else' part of an if-then-else statement be executed?

• When the condition is true

• When the algorithm starts

• When the condition is false

• When the algorithm ends