23.4. Suspending Execution for a Fixed Interval (Sleeping)

Sometimes, we want to suspend execution of a process for a fixed amount of time. While it is possible to do this using a combination of sigsuspend() and the timer functions already described, it is easier to use one of the sleep functions instead.

23.4.1. Low-Resolution Sleeping: sleep()

The sleep() function suspends execution of the calling process for the number of seconds specified in the seconds argument or until a signal is caught (thus interrupting the call).