Генерация случайных значений от 0 до 1

#include <random>
#include <iostream>
 
typedef std::tr1::ranlux64_base_01 EngineToUse;
typedef std::tr1::normal_distribution<double> DistribToUse;
 
int main() {
       EngineToUse eng;
       eng.seed((unsigned int) time(NULL));
       DistribToUse dist(0,1);
 
       dist.reset();
       double rndNumber = dist(eng);
       std::cout << rndNumber << std::endl;
 
       return (0);
}

#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;
 
int main() {
    system("chcp 1251>nul");
    srand(time(NULL));
    float r = static_cast <float> (rand()) / static_cast <float> (RAND_MAX);
    cout << r << endl;
    system("pause>nul");
    return 0;
 
}

typedef std::tr1::ranlux64_base_01 EngineToUse;
typedef std::tr1::normal_distribution<double> DistribToUse;
EngineToUse eng;
DistribToUse dist(0.5,0.17);
 
double rndNumber()
{
    eng.seed((unsigned int)time(NULL));
    dist.reset();
    double rndNum = 0;
    rndNum = dist(eng);
    if (rndNum > 1 && rndNum < 0)
        rndNumber();
    return rndNum;
}
 
 
int main()
{
       for(int i = 0; i < 10; i++)
           std::cout << rndNumber() << std::endl;
       return (0);
}

typedef std::ranlux64_base_01 EngineToUse;

double rndNumber()
{
    static EngineToUse eng(static_cast<EngineToUse::result_type>(time(NULL)));
    static DistribToUse dist(0.5,0.15);
    double result = dist(eng);
    return result < 0 ? 0 : (result > 1 ? 1 : result);
}