A looping (iteration) control structure can take two forms. Loop is an operation that repeats until a certain condition is met. True Falseġ8 Program Design: Iteration Control Structures
Statement1 Statement Statement2 Condition.
When more than two possible choices exist, the case control structure can be used instead.
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Sequence A sequence control structure is simply a series of procedures that follow one another. * No standard set of rules exists for writing pseudocode, although a number of conventions have been developed. * Unlike a flowchart, pseudocode is easy to modify and can be embedded into a program as comments. * uses English-like statements in place of the graphic symbols of the flowchart. Different symbols are used to represent different actions, such as start/stop, decision, input/output, processing, and looping symbols.ġ3 Program Design 3-Pseudocode Program Design Tools The steps in a flowchart follow each other in the same logical sequence as their corresponding program statements will follow in a program. Use geometric symbols and familiar relational operators to provide a graphic display of the sequence of steps involved in a program. Program modules should be arranged hierarchically, in a top-down fashion, so that their relationship to each other is apparent.ĩ Program Design: 2-Program flowcharts : Program Design Tools Show the overall organization of a program, and how the modules of a program-logically related operations that perform a well-defined task-are defined and how they connect to each other hierarchically. 1- Structure charts 2- Program flowcharts 3- Pseudocodeħ Program Design: 1-Structure charts : Program Design Tools Structured programming and object-oriented programming are two of the most significant approaches to the design process. Documentation consists of: program specifications, timetable, which language will be used, how the program will be testedĥ 2- Program Design Program design: stage where program specifications are expanded into a complete design of the new program.
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Program Development (application software development) The process of creating application programs Program Development Life Cycle (PDLC) The five phases of program developmentĤ 1- Problem Analysis During problem analysis, a systems analyst and programmer review specifications and talk with users to fully understand what the software should do. The process associated with creating successful applications programs is called the program development life cycle (PDLC).ģ The Program Development Life Cycle (PDLC) 1 Program Development and Programming LanguagesĬreating new programs is called program development.
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