c++字符串分割

#ifndef STRINGFUNCTIONS_H_INCLUDED
#define STRINGFUNCTIONS_H_INCLUDED



#include <vector>
using namespace std;




vector<char*> * split(char* str, char separator='\t')
{
    vector<char*> *vp = new vector<char*>;


    char *str1 = str;
    int n = 0;
    int left = 0;
    while(*str1 != '\0')
    {
        if(*str1 == separator)
        {
//            cout << n << endl;
            for(int i=n-1; i>=left; i--) str1--;
//            cout<< str1<<endl;

            //char a[n-left+1];
            char *a = new char[n-left+1]; //vector 在堆上，添加数组时只能添加堆上的数组
            a[n-left]='\0';
            for(int i=left+1; i<=n; i++)
            {
                a[i-left-1] = *str1;
                str1++;
            }
//            for(int i = 0; i < int(sizeof(a)/sizeof(a[0]))-1; i++)
//            {
//                cout<<a[i]<<",";
//            }
//            cout<<endl;
            (*vp).push_back(a);


            left = n+1;
        }


        str1++;
        n++;
    }

    if(left!=0)
    {
        //char a[n-left+1];
        char *a = new char[n-left+1];
        a[n-left]='\0';


        for(int i=n-1; i>=left; i--) str1--;
        for(int i=left; i<n; i++)
        {
            a[i-left] = *str1++;
        }
        (*vp).push_back(a);
//        for(int i = 0; i < int(sizeof(a)/sizeof(a[0]))-1; i++)
//        {
//            cout<<a[i]<<",";
//        }
//        cout<<endl;
    }

    return vp;
}


#endif // STRINGFUNCTIONS_H_INCLUDED

#include <iostream>
#include "stringFunctions.h"
using namespace std;


int main()
{
    char a[1024] = "镜湖三百里/菡萏发荷花/五月西施采/人看隘若耶/回舟不待月/归去越王家";
    cout << sizeof(a)/sizeof(a[0])<< endl;


    //vector<char*> * vp = split(a,',');
    vector<char*> * vp = split(a,'/');
    for(vector<char*>::iterator it=(*vp).begin(); it!=(*vp).end(); it++)
    {
        char* a = *it;
        while(*a)
        {
            cout<<*a;
            a++;
        }
        cout<<endl;
    }


    delete vp;
return 0;
}