Iterative testing is a process used in computer programming where a program is tested and improved step by step. After writing a part of the code, a programmer runs tests to check if it works as expected. If there are any problems, they fix them and test again. This cycle of testing and improving continues until the program works correctly and meets all requirements. Iterative testing helps ensure that any mistakes are found early on, making it easier to fix them before the program is complete. It's like proofreading a piece of writing multiple times to catch and correct any errors.
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