How to stop a running pthread thread?

Question

How can I exit or stop a thread immediately?

How can I make it stop immediately when the user enters an answer? I want it to reset for every question.

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Answer 1

You can simply call pthread_cancel on that thread to exit it. And you can send SIGSTOP/SIGCONT signal via pthread_kill to stop/restart it.

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But if all you want is a timer, why must you thread?