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Transcript
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.