rand（）不服从Qt Creator中的srand（）

Question

I've written a program in Qt Creator 1.0.0 (Qt version 4.5.0) where at the beginning of main() function I've put

srand(time(0));

Then I'm calling rand() from another thread (subclass of QThread). In that function, rand() is producing same sequence of numbers each time I'm running the program. I'm not running the program multiple times in a second.

Why is this happening?

Answer 1

您需要在每个线程中调用srand，因为种子存储在特定于线程的块中。