sting split

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


using namespace std;


int main()
{
        string test = "aa aa bbc cccd";
        vector<string> strvec;
        string strtemp;
        
        string::size_type pos1, pos2;
        pos2 = test.find(' ');
        pos1 = 0;        
        while (string::npos != pos2)
        {
                strvec.push_back(test.substr(pos1, pos2 - pos1));
                
                pos1 = pos2 + 1;
                pos2 = test.find(' ', pos1);
        }
        strvec.push_back(test.substr(pos1));
        
        vector<string>::iterator iter1 = strvec.begin(), iter2 = strvec.end();
        while (iter1 != iter2)
        {
                cout << *iter1 << endl;
                ++iter1;
        } 
        
        return 0;
}