I have made the rand-word function with erase function. I`m trying to repair this code., C++ (gcc)

I have made the rand-word function with erase function. I`m trying to repair this code.

// LessonSkype.cpp: определяет точку входа для консольного приложения.
//

#include "stdafx.h"
#include <string>
#include <iostream>
#include <ctime>
#include <cstdlib>

int index;
using namespace std;

string words[] = { "автомобиль", "турник","лампочка","дерево" ,"кружка" ,"ноутбук" ,"черника" ,"автомат" ,"батарейка", "велосипед" };

//string checkWords[SIZE]{};

class stringArray {
public:
	stringArray(string *arr, int length) {
		this->words = new string[length];
		this->size = length;
		for (int i = 0; i < size; i++) {
			words[i] = arr[i];
		}
	}
	~stringArray() {
		delete[] words;
	}

void GetRandWord() {
		cout << randWord() << endl;
	}

private:
	string *words;
	int size;

void erase(string *&words, int &size) {
		words = new string[size - 1];
		for (int i = 0; i < (size-1); i++) {
			if (i == index) {
				continue;
			}
			else {
				words[i] = this->words[i];
			}//ПРоверить функцию
		}
		size--;
		delete[] words;
	}

string randWord() {
		index = rand() % size;
		string rand_word = words[index];
		erase(words, size);
		return rand_word;
	}

};

//void push_forward(string *&words, int &size) {
//	int *arrBack = new int[size + 1];
//	arrBack[0] = addChar;
//	for (int i = 1; i < (size + 1); i++) {
//		arrBack[i] = arr[i - 1];
//	}
//	size++;
//	delete[] arr;
//	arr = arrBack;
//}

int main()
{
	int size_arr = 10;
	setlocale(LC_ALL, "Rus");
	stringArray a(words, size_arr);

for (int i = 0; i < 10; i++) {
		a.GetRandWord();
	}

system("pause");
    return 0;
}


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