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Question
If C is false in line 2, trace the control flow in this algorithm.
1 S1
2 -- C is false
3 if C
4 S2
5 else
6 S3
7 S4
Solution
The control flow for the given algorithm is as follows:
S1
S3
S4
The condition is false so it executes S3. In this case, S2 skipped.
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If C is false just before the loop, the control flows through
1 S1
2 while C
3 S2
4 S3
If C is true, S1 is executed in both the flowcharts, but S2 is executed in
(1)
(2)
