2204	 Program Development by Stepwise Refinement	 The creative activity of programming-to be distinguished from coding-is usually taught by examples serving to exhibit certain techniques. It is here considered as a sequence of design decisions concerning the decomposition of tasks into subtasks and of data into data structures. The process of successive refinement of specifications is illustrated by a short but nontrivial example from which a number of conclusions are drawn regarding the art and the instruction of programming. education in programming programming techniques stepwise program construction
