Representing sequencing
There are two ways of representing A sequence of logical instructions for carrying out a task. In computing, algorithms are needed to design computer programs.:
- Also written as pseudo-code. A method of writing up a set of instructions for a computer program using plain English. This is a good way of planning a program before coding.
- a flow chart (also known as a flow diagram)
Representing sequencing in pseudocode
Writing in pseudocode is rather like writing in a A language used by a programmer to write a piece of software. . Each step of the algorithm is written on a line of its own, in sequence.
Consider this simple algorithm for calculating how old a dog is in dog years. It contains three steps, all in sequence:
- 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 the answer on the screen
In pseudocode, the algorithm would look like this:
OUTPUT 'How old is your dog?'
INPUT user inputs their dog's age in human years
STORE the user's input in the human_years variable
dog_years = human_years * 7
OUTPUT 'In dog years, your dog is aged' + dog_years