String split function

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

using namespace std;

vector<string> split(string subject, string delimiter)
{
    vector<string> out;
    string tmp;

    size_t start = 0;
    size_t end = subject.find(delimiter, start);

    tmp = subject.substr(start, end);

    out.push_back(tmp);

    if (end == string::npos)
    {
        return out;
    }

    do
    {
        start = end + delimiter.length();
        end = subject.find(delimiter, start);

        tmp = subject.substr(start, end);

        out.push_back(tmp);

        if (end == string::npos)
        {
            break;
        }

    } while (tmp.length() > 0);

    return out;
}

int _tmain(int argc, _TCHAR* argv[])
{
    vector<string> subs = split("1,2,3,4", ",");

    for (auto sub : subs)
    {
        cout << sub << endl;
    }

    cin.get();

    return 0;
}