#include <iostream>

using namespace std;

// Пункт билета #1
void CreateArray(double* arr, int size)
{
    for (int i = 0; i < size; i++)
        arr[i] = pow(-1, i) * 2 * i / (i + 1);
}

// Пункт билета #2
double GetPositiveSum(double* arr, int& index, double& maxValue)
{
    double sum = 0;
    index = 0;
    maxValue = arr[0];
    int size = _msize(arr) / sizeof(double);
    for (int i = 0; i < size; i++)
    {
        if (arr[i] > 0)
            sum += arr[i];
        if (arr[i] > maxValue)
        {
            maxValue = arr[i];
            index = i;
        }
    }
    return sum;
}

// Пункт билета #3
int main()
{
    double* arr = new double[9];
    CreateArray(arr, 9);
    cout << "Array: ";
    for (int i = 0; i < 9; i++)
        cout << arr[i] << " ";
    cout << endl;
    double maxValue;
    int index;
    double sum = GetPositiveSum(arr, index, maxValue);
    cout << "Sum of positive numbers = " << sum << endl;
    cout << "Maximum element index = " << index << endl;
    cout << "Maximum element = " << maxValue << endl;
}