2.1 Flow Diagrams

Question 1

What are Flowcharts

Answer 1

Flow diagrams are used to visually represent the steps that make up an algorithm

A standard set of shapes are used to represent different types of step.

Question 2

What shapes are used in Flowcharts

Answer 2

• An oval is used for the start and end of a program.
• A rectangle is used to represent a process.
• A parallelogram is used to represent an input or an output.
• A diamond is used to represent a decision:
  
  • A decision has two labelled arrows coming out of it.
  • The ‘Yes’ arrow is followed if the condition in the diamond was true, otherwise the ‘No’ arrow is followed.