If a program runs for several seconds and appears to be doing nothing or produces repeated output, you should suspect an infinite loop.

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Quizplus · Accepted Answer

An infinite loop is a loop that does not have a termination condition, causing it to run indefinitely. As a result, the program may appear to be doing nothing or producing repeated output. Therefore, if a program runs for several seconds under these circumstances, an infinite loop is a likely suspect.

If a Program Runs for Several Seconds and Appears to Be