#include <iostream>
#include <string>
#include <sstream>
#include <iomanip>

int main()
{
    std::string sentence{"  Hello   how are you."};
    std::stringstream ss{sentence};
    std::string junkWord;
    if (ss >> junkWord >> std::ws && std::getline(ss, sentence, '\0'))
        std::cout << sentence << '\n';
    else
        std::cerr << "the sentence didn't contain ANY words at all\n";
}