How to get the first element of an array if there is a pointer to the array(wstring)?

Question

C++ / C#

The code

#include <iostream>
#include <sstream>
#include <string>

using namespace std;

wstring* splitParamsFromPayload(wstring payload) {
  wstring arr[2] = { L"", L"" };
  if (payload.find(L" ") != wstring::npos) {
    wstringstream ws(payload);
    ws >> arr[0];
    ws.clear();
    arr[1] = payload.erase(0, arr[0].length() + 1);
    return arr;
  }
  else {
    arr[0] = payload;
    wcout << arr[0] << endl;
    return arr;
  }
}

int main() {
  wstring* arr = splitParamsFromPayload(L"test");
  wcout << (*arr)[0] << endl;
  _wsystem(L"pause");
  return 0;
}

Help :)

Answer 1

If there is a pointer to the first element of the array of strings wstring* arr, then *arr— the first string in it; (*arr)[0]is the first character of the first line. Everything is right here.
And the program does not work that's why. There is no way to return a raw array from a C++ function. (In this case, a pointer to an already deleted array is returned!) Solution: do not use raw arrays, but create, fill and return vector<wstring>. In this case, the vector is suitable, because A line can have a different number of words.