Big Integer in C++

Look what I found! No more hastle of calculation of factorials of numbers > 100. #include <boost/multiprecision/cpp_int.hpp> #include <iostream> namespace mp = boost::multiprecision; using namespace std; int main() { mp::cpp_int u = 1; for(int i = 1; i <= 100; i++) u *= i; cout << "100! = " << u << '\n'; mp::cpp_int v = u / 100; cout << "99! = " << v << '\n'; }