This is my first Boost program #include <iostream> #include <cstdlib> #include <boost\random.hpp> using namespace std; using namespace boost; typedef boost::mt19937 BaseGenerator; typedef boost::uniform_real<double> Distribution; typedef boost::variate_generator<BaseGenerator,Distribution> Generator; double boostDoubleRand() { static BaseGenerator base; static Distribution dist; static Generator rng(base,dist); return rng(); } int main() { cout << "expect 5 numbers within the interval [0,1)" << endl; for (int i = 0; i < 5; i++) { cout << boostDoubleRand() << "\n"; } cout << endl; return 0; } Compiled using Borland C++ 5.6.4 and it works well. But when I compile it using MingW GCC, it only prints "expect 5 numbers within the interval [0,1)" and not the 5 random numbers. Why ? --------------------------------- Yahoo! FareChase - Search multiple travel sites in one click.