<<Vector-Print pretty>> _HakerRank_C++_STL

#include <iostream>#include <iomanip> using namespace std;int main() {int T; cin >> T;cout << setiosflags(ios::uppercase);cout << setw(0xf) << internal;while(T--) {double A; cin >> A;double B; cin >> B;double C; cin >> C;        /* Enter your code here */        cout << std::hex << std::left << std::showbase << std::nouppercase;         cout << (long long) A << endl;        cout << std::dec << std::right << std::setw(15) << std::setfill('_')              << std::showpos << std::fixed << std::setprecision(2);         cout << B << endl;        cout << std::scientific << std::uppercase << std::noshowpos              << std::setprecision(9);         cout << C << endl;        /* Enter your code here */}return 0;}