C++ Spliting String (Testas 17)

#include <iostream>
#include <fstream>
#include <string.h>
#include <string>
#include <locale.h>

using namespace std;

string zodz[50];

int main() {
    int i = 0;
    char a[256];
    int n;
    //char zodis[];
    string temp;
    char * split;
    ifstream fd("Duomenys.txt");
    ofstream fr("Rezultatas.txt");
    fd.getline(a,256);
    cout << a << endl;
    split = strtok(a," ,.-");


    cout << "Iveskite zodzio vieta ";
    cin >> n;
    cout << endl;
    cout << "Iveskite zodi ";
    cin >> temp;

    while (split != NULL) {
        i++;
        if ( i == n) {
            fr << temp << " ";
            cout << temp << " ";
        }
        printf ("%s\n",split);
        fr  << split << " ";
        split = strtok (NULL, " .-");
     }
    return 0;
}