synopsis.
a few simple functions for putting a non-threaded program to sleep. you can select the time resolution you want / need:

seconds: z_sleep()
milliseconds: z_msleep()
microseconds: z_usleep()

[C] functions (aka subroutines):

z_sleep()
SIGNATURE: int z_sleep (count_t n)
SYNOPSIS: sleep for n seconds
 

z_msleep()
SIGNATURE: int z_msleep (count_t n)
SYNOPSIS: sleep for n milliseconds (1/1,000th of a second)
PARAMETERS

n - wait time (in milliseconds)

 

z_usleep()
SIGNATURE: int z_usleep (count_t n)
SYNOPSIS: sleep "n" microseconds
DESCRIPTION:
for highly refined sleeping. Sleeping for a resolution of 1 microsecond is highly dependent on the operating system. This function is substantially different, depending on the OS [System V: poll(); BSD: select(); Microsoft: Sleep(), etc.]