Split C++

#include <string>
#include <vector>

using namespace std;

vector<string> split(string str, char delimiter = ' ')
{
    vector<string> ret;

    int start = 0;

    for(int i=0; i < str.length(); ++i) {
        if(str[i] == delimiter) {
            ret.push_back(str.substr(start, i-start));
            start = i+1;
        }
    }

    ret.push_back(str.substr(start, start - str.length()));

    return ret;
}