Y8 Algorithm Design

Which method for representing an algorithm is the most visual?

• Pseudocode

• Flow Chart

• Sentences

What is an algorithm?

• A type of computer code

• A set of computer instructions

• A set of instructions to solve a problem

• A list of tasks

In flow charts, which shape is used to represent an INPUT/OUTPUT?

• Rectangle

• Diamond

• Rounded Rectangle

• Parallelogram

What data type is the following an example of?

"Hello Year 9 students"

• Integer

• String

• Real

• Boolean

The char data type stores...

• a single number

• a single letter

• a single special character

• any single character

Boolean data type is used to store a true or false value only.

• True

• False

What are loops used for?

• To prevent lines of code being repeated

• To repeat a sequence of code as many times as the user wishes

• To repeat a sequence of code for a certain number of times

• To provide a sub routine within a program

A WHILE loop...

• repeats a sequence of code while a condition is false

• repeats a sequence of code while a condition is true

• repeats a sequence of code if a condition is true

• repeats a sequence of code if a condition is false

What does the following algorithm do?

START

count <- 0

Repeat

OUTPUT count

count <- count +1

Unit count = 10

END

• Counts down from 10 to 0

• Counts up from 0 to 10

• Counts from 0 to 10 in twos

• Counts up from 0 to 10 with 1 second between each output

What does this flow chart do?

• Adds a life when the player touches the ground

• Removes a life when the player touches an enemy

• Removes 2 lives when the player touches the ground

• Removes a life when the player touches the ground