The design of this book is based on teaching the ]SP (Jackson Structured Pro� gramming) methodology to undergaduates and postgraduates over a period of a number of years. I am grateful for the comments and feedback that have been provided by students who have taken these courses. The aim of the book is to provide readers with an understanding of the concepts behind the ]SP methodology in order that they may apply it for themselves; simply using the notation is not sufficient, it must be used appropriately. The answer to the question "Why is this wrong?" can lead to a greater understanding than a sim� ple response to "Is this right?". I have included illegal structures as "under� standable mistakes" in the early sections for this reason. It is not necessary for readers of this text to have experience with any par� ticular programming language; indeed, one of the virtues of ]SP is that it is lan� guage independent. Examples have been given in Pascal, C and COBOL as these are languages which students of ]SP are likely to have met in the course of their studies, or will be meeting while they are learning ]SP. The COBOL lan� guage is widely used in industry in a ]SP development environment.

From the Back Cover

JSP is intended for both educational and commercial arenas, as it allows for easy maintenance, modification and straightforward code conversion. This is an ideal first course book for novice programmers and is suitable for students of computer science, information technology and business computing who are approaching JSP for the first time.

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