Representing selection in a flow diagram
A flow diagram (also known as a flowchart) is a diagram that explains the steps of an A sequence of logical instructions for carrying out a task. In computing, algorithms are needed to design computer programs..
Consider this simple six-step algorithm for comparing your dog’s age with your own:
- ask how old the dog is in human years
- multiply human years by seven to find out how old the dog is in dog years
- print answer on the screen
- ask how old you are
- if the dog’s age in dog years is older than your age, say ‘Your dog is older than you!’
- otherwise, say ‘Your dog is not older than you.’
In a flow diagram, this sequence would look like this:
