Jovi Zhihao Zhou Jovi Zhihao Zhou -4 years ago 132
C++ Question

How to use uniform_real_distribution to generate different numbers?

I used default_random_engine to generate a list of different numbers, but they happen to be the same. I wonder to generate different numbers? I know srand() does. But can I use this default engine?

default_random_engine engine{ static_cast<unsigned int>(time(0)) };
uniform_real_distribution<double>randomNumber{ 50,100 };
for(int i=0; i<10;i++){
a[i]= randomNumber(engine);
}

Answer Source

That behavior is by design for random number generators. You need to set the 'seed' for the random generator when you start your program.

If you have the C++ extensions @WhozGraig recommends they're best. It's very sloppy but many people use the time() function to get a different number each time the program runs.

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