=+(iii) An authorized operator is identified by the input of an authorized door entry code. The code

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=+(iii) An authorized operator is identified by the input of an authorized door entry code.

The code shown in Figure 12.15 controls the door-locking mechanism. Note that the safe state is that entry should not be permitted. Using the approach discussed in this chapter, develop a safety argument for this code. Use the line numbers to refer to specific statements. If you find that the code is unsafe, suggest how it should be modified to make it safe.

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Software Engineering

ISBN: 9780133943030

10th Edition

Authors: Ian Sommerville

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