Stepwise Refinement Stepwise Refinement is an example of a top-down methodology for developing a computer program.

computer science

Description

Stepwise Refinement Stepwise Refinement is an example of a top-down methodology for developing a computer program. It begins with expressing the program as a small number of large tasks, then sub-dividing each task into more and more smaller and smaller tasks until each small task is easily achievable in the chosen programming language. The tasks should be written in language which avoids explicit references to any particular programming language.


Stepwise Refinement - 

Example 1. The program should: 

• Determine the class average for a set of test marks, input by the user. 

• The number of test marks is not known in advance, so the user will have to enter a trigger value to indicate that all the results are in.


Stepwise Refinement - 

Example 

1 Declare and initialize variables 

2 Input marks till all are in 

3 Calculate class average and output result Steps 1 and 3 seem simple at the moment (might need to revisit them later), but 2 definitely needs more explanation


Instruction Files
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