Computer Science

the process of repeating a sequence of instructions within a program loop

an expression that evaluates to True or False

While loops

Using trace tables

For loops

Nested loops

Randomisation

Validating data input in a program

Designing robust programs

Programming project: iteration I

Programming project: iteration II

In this unit pupils discover how iteration is used to replicate parts of a program. They will analyse the difference between count and condition controlled iteration and how trace tables can be used to trace through loops. They will explore data validation techniques and robust program design.

Programming: iteration

a tool used to track the values of variables and the flow of execution in an algorithm or program, step by step

an iterative statement that will repeat for the length of a given sequence

the process of placing one loop inside another loop

the loop that contains another loop inside it

the loop that is placed inside another loop and runs completely each time the outer loop runs once

a file with pre-made code you can use in your own programs

a collection of built-in modules that come with Python

checking that data is acceptable by comparing it against a set of criteria

when a program suddenly stops working and closes unexpectedly, often due to an error it cannot recover from

a program that handles errors or unexpected input without crashing

code that catches and manages errors so the program doesn't crash

breaking down a problem into smaller parts to make the task more manageable

a loop that checks its condition at the start before any code inside the loop is run

a loop that runs its code first, then checks the condition at the end to decide if it should repeat

a document that sets out the tests that will be carried out during testing

the input values used to check whether a program works correctly during testing and to see how it behaves in different situations

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Programming: iteration

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