C++ :: Stringstream - Split User Input Into Words Separated By Space

I trying to get input from the user and split into words that separated by a space.

string s = "1 2 3";
istringstream iss(s);
int n;
while (iss >> n) {
cout << "* " << n << endl;
}

The code above works fine but i want to get the string from user. the code below only prints the first word and trashes rest of the words in the sentence.

string s ;
cin>>s;
istringstream iss(s);
string n;
while (iss >> n) {
cout << "* " << n << endl;
}