Solved: Question about qrand()

[romeo.rbw]

Hi...
I make a test of qrand() in my application. I want to make a random integer from 1 to 5. The instruction is:
qDebug << "ID random: " << qrand() % 5;

but after tested many times the result always 1. Is there any suggestion? I need your help.
Thanks in advance.

[Jeroentjehome]

Hi there,
Do you only call it ones after program startup?
Then it's the same as the default srand() function in C. It will always hold the same value when not initialised with a value. So you could use the msec time expired since program stated to set the initialised value. That should give you a more random value.
Greetz

[romeo.rbw]

Thank for reply. Yes, I only call once in the beginning of Start button action. I hope can catch a random value for the next processing. Still confusing...:)

[romeo.rbw]

Finally it works, I used srand() in Qt qsrand() and using the code:

qsrand(time(NULL));
ID=qrand() % 6;
qDebug << “ID random: “ << ID;

Thanks for the idea srand().