/*
* show two clocks starting from 5 minutes, countdown in seconds to 0.
* one clock runs at a time, use a signal or keypress to switch clocks.
*/
#include <stdio.h>
#include <unistd.h>
int
main()
{
int i;
/* 5 min * 60sec = 300sec */
for (i = 300; i > 0; --i) {
sleep(1);
printf("\r%d", i);
fflush(stdout);
}
return 0;
}
