Potegi

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

using namespace std;

void countandwrite(double *arr, int how)
{
    string str, strl;
    double last;

    for (int i = 0; i < how; i++)
    {
        str = to_string(int (pow(arr[0, i], arr[1, i])));

        cout << "Power:" << str << endl;

        strl = str.back();
        last = stod(strl);

        cout << "Last character:" << last << endl;
    }
}

int main()
{
    int how;

    cout << "Number of powers:";

    cin >> how;

    double *arr;
    arr = new double[2, how];

    for (int j = 0; j < how; j++)
    {
        cout << "Number:";
        cin >> arr[0, j] >> arr[1, j];
        cout << endl;
    }

    countandwrite(arr, how);

    delete[]arr;

    system("pause");

    return 0;
}