C++

I have this code and I'm not quiet sure what is wrong with it, especially what random_device, default_random_engine, and normal_distribution are suppose to do. If someone could explain these few functions in simple words and point out what is wrong with it( why is it when I try to cout vector v it have nothing on it). Thnaks!

#include

#include

#include

#include

using namespace std;

constexpr int a = 10;

int main(int argc, char * argv[])

{

random_device dev{};

default_random_engine engine{ dev() };

normal_distribution dist{ 32, 2 };

vector v;

for (int i = 0; i >= a; ++i) v.push_back(dist(engine));

for (int i = 0; i < v.size(); ++i) cout << v.at(i);

return 0;

}