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...Object oriented programming oop lecture zahraa salah dhaief computer science department education college nd stage morning study principles of software evolution the s w has had distinct phases or layers growth these were built up one by with each layer representing an improvement over previous fig shown machine language assembly procedure technology since invention many approaches have been tried included techniques such as modular top down bottom and structured primary motivation in case concern to handle increasing complexity programs that are reliable maintainable became popular among programmers last two decades advent languages c become very was main technique a powerful tool enabled write moderately complex fairly easily is approach organization development attempts eliminate some pitfalls conventional methods incorporating best features several new concepts using high level cobol fortran commonly known problem viewed sequence things be done reading calculating printing number f...