How to get a unique random number on mac?

[punitk]

Hi

I am generating a random number number using qrand() .

In Windows I am getting unique random number by
using
qsrand(QDateTime::currentDateTime().toTime_t());

int nRand = qrand()%100;

But in Mac I am getting 0 .

What would parameter for qsrand(...) for Mac OS?

If any one can help , pls help?

Thanks in advance....