iterative development, set stages which are followed in order. can go back and repeat a previous stage if error/mistake is found. Client only involved at analysis stage, agile development, Development broken down into small chunks called 'sprints' at the end of each sprint a new feature/function is designed coded and tested. Client heavily involved throughout, scope, Deliverables of the project, Boundaries , limits of the program, record, , array of records, dim personDetails(9) as person, modular code, advantages of a certain type of code, Many programmers can work on the same program at once a module can be re used in different programs, errors can be localised to a specific module, chr, What predefined structure is this Result = chr(65), execution, What type of error is this the program runs but then crashes while it is running common examples are trying to divide by 0 or trying to pen a file that doesnt exist, watchpoint, The program is paused when a specific condition is met to allow the programmer to check the value of the variables.

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