Why is it considerably more difficult to test, debug, and prove program correctness for concurrent programs than for sequential programs?
What will be an ideal response?
There are many more possible execution sequences than with sequential programs. Concurrent actions may be performed in any possible sequence including simultaneously on parallel computing architectures such as multiprocessors. Another problem is that concurrent programs may malfunction because of subtle timing problems. Debugging systems can be difficult if it is not possible to replicate the precise sequence of events that occurred. An example would be an air traffic control system monitoring the movements of thousands of planes—it would be impossible to reposition the planes at precisely the locations they occupied when a bug was detected.
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a. an object represented by XML that includes the object’s data. b. an object in memory that has been recreated from data in a file c. a standard output stream object used to convert objects in code to data in a file d. None of the above.
When comparing two data values in Visual Basic, both values must be the same data type.
Answer the following statement true (T) or false (F)