Measure time in minutes in C

I am writing a program that will need to measure time in minutes.

To be exact, it will wait 10 minutes, execute some code, wait 2 minutes, execute more code and repeat this 5 times (anyone guess what I'm trying to do?) and I am wonderi开发者_运维知识库ng how to do the breaks.

Thanks in advance!

Oh, and by the way, I'm on Mac.

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#include <stdio.h>
#include <unistd.h>
sleep(600); // sleep ten minutes
sleep(120); //sleep two minutes

OR if that doesn't work, it'll be usleep, which takes miliseconds as argument I believe. (1 second = 1000)

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sleep(3)