#include <string>
#include <iostream>
#include <cctype>
#include <vector>

using std::cout;
using std::cin;
using std::string;
using std::vector;
using std::endl;

vector<string> split(const string& s)
{
    vector<string> ret;
    typedef string::size_type string_size;
    string_size i = 0;
    
    while (i != s.size()) {
          while (i != s.size() && isspace(s))
                ++i;
          
          string_size j = i;
          
          while (j != s.size() && !isspace(s[j]))
                ++j;
          
          if (i != j) {
             ret.push_back(s.substr(i, j - i));
             i = j;
          }
    }               
}

int main()
{
    //ask for and stores a string in s1.
    cout << "Pleas enter a string:";
    string s;
    
    while (getline(cin, s)) {
          vector<string> v = split(s);
          
          for (vector<string>::size_type i = 0; i != v.size(); ++i)
              cout << v << endl;
    }
    return 0;
}