Download Pseudocode Structure Diagrams

Student Notes
Form 3
P s e udoc ode
Pseudocode is another method of how an algorithm can be written down. In
pseudocode, the steps of the algorithm are written in simple English using some
reserved words (key words). Pseudocode is usually used when the algorithm is
too cumbersome to be displayed as a flowchart.
The following reserved words are normally used when developing pseudocode;
Arithmetic: add, subtract, multiply, divide, calculate
Data transfer: move, store, replace
Input/output: read, input, output, print
Decision: if...then...else
Repetition: repeat...until, while...endwhile, for...endfor
Structure Diagrams
Structured diagrams show how a complex problem may be broken down in
simpler parts. For example, a problem can be broken down in 3 main sections
(Input, Processing and Output). Each Section is then broken down into a number
of small points as shown below.
Flowchart
Pseudocode
Structured diagram
Sum of 2 numbers
1. Read X
2. Read Y
3. Total = X + Y
4. Print Total
Input
Read X
1/1
Process
Read Y
Total = X + Y
Output
Print Total
Aquilina K.