运用std::string 实现split功能

#include <iostream>
#include <string>
#include <vector>
using namespace std;
int main()
{
    string str,substr;    
    vector<string> vstr;
    char separator=',';
    int start=0,
    int index=0;


    cout<<"input some numbers";    
    cin>>str;

    do {
        index = str.find_first_of(&separator,start);
        if (index !=string::npos) {
           substr= str.substr(start,index-start);
           vstr.push_back(substr);


           start = str.find_first_not_of(&separator,index);
           if (start == string::npos) {
               break;
           }

        }

    }while(index !=string::npos);

    //当最后不是以‘，’　结尾的时候，获取最后一个数字
    if (start !=string::npos) {
        substr=str.substr(start);
        vstr.push_back(substr);
    }

     for (vector<string>::iterator iter = vstr.begin(); iter !=vstr.end(); iter++) {
        cout<<*iter<<endl;
    }

参考

http://blog.youkuaiyun.com/pj81102/article/details/5836066