用反向迭代器和普通迭代器逆序输出…

int main (int argc, char* argv[])
{
   vectornumbers;
    cout<< "vector:" << endl;
    for (int i =0; i < 10; ++i) {
      numbers.push_back (i);
      cout << i << " ";
    }
    cout<< endl << "---------------------------------------"<< endl;
    cout<< "用反向迭代器逆序输出vector:" << endl;
    for_each(numbers.crbegin (), numbers.crend (), [] (const int &i){cout<< i << " "; });
    cout<<endl << "---------------------------------------"<< endl;
    cout<< "用普通迭代器逆序输出vector:" << endl;
    for (auto it= numbers.cend (); it > numbers.begin ();)
      cout << *--it << " ";
    cout<< endl;
    return0;
}