Random number generation in C++ [duplicate]

I've written this code using the library in C++.

# include <math.h>
# include <iostream>
# include <random>

double srand(){
   std::uniform_real_distribution<double> distribution(0.0, 1.0);
   std::random_device rd;
   std::default_random_engine generator(rd());
   return distribution(generator);
}

using namespace std;

int main(){
   for(int i=0; i < 10; i++){
   cout << srand() << endl;
   }
}

But every time I run the code, I get this result:

0.687363 0.687363 0.687363 0.687363 0.687363 0.687363 0.687363 0.687363 0.687363 0.687363