#include <iostream>
#include <vector>
#include <string>
 
using namespace std;
 
vector<string> explode( const string &delimiter, const string &explodeme);
 
int main(int argc, char *argv[])
{
    string str = "I have a lovely bunch of cocoa nuts";
    cout<<str<<endl;
    vector<string> v = explode(" ", str);
    for(int i=0; i<v.size(); i++)
        cout <<i << " ["<< v[i] <<"] " <<endl;
}
 
vector<string> explode( const string &delimiter, const string &str)
{
    vector<string> arr;
 
    int strleng = str.length();
    int delleng = delimiter.length();
    if (delleng==0)
        return arr;//no change
 
    int i=0;
    int k=0;
    while( i<strleng )
    {
        int j=0;
        while (i+j<strleng && j<delleng && str[i+j]==delimiter[j])
            j++;
        if (j==delleng)//found delimiter
        {
            arr.push_back(  str.substr(k, i-k) );
            i+=delleng;
            k=i;
        }
        else
        {
            i++;
        }
    }
    arr.push_back(  str.substr(k, i-k) );
    return arr;
}

#include <iostream>
#include <sstream>
#include <string>
using namespace std;
 
int main() {
  string sentence_s;
  stringstream sentence_ss;
 
  cout << "Enter a sentence: ";
  getline(cin, sentence_s);
  sentence_ss << sentence_s;
 
  string word;
 
  while ( sentence_ss >> word )
    cout << '\n' << word;
 
  cin.ignore();
}