v1

#include <iostream>

int main2() {
    size_t arraySize;
    std::cout << "Enter array size: ";
    std::cin>>arraySize;

    int* array = new int[arraySize];
    for (int i = 0; i <  arraySize; i++) {
        std::cout << "Enter " << i << " element: ";
        std::cin >> array[i];
    }

    int sum = 0;
    for (int i = 0; i< arraySize; i+=2) {
        sum += array[i];
    }
    std::cout << "Sum of elements with odd index: " << sum << std::endl;

    delete[] array;
    return 0;
}

int main() {
    std::cout << "Size of array: 5" << std::endl;
    const size_t arraySize = 5;
    int array[arraySize];
    for (int i = 0; i <  arraySize; i++) {
        std::cout << "Enter " << i << " element: ";
        std::cin >> array[i];
    }

    int sum = 0;
    for (int i = 0; i< arraySize; i+=2) {
        sum += array[i];
    }
    std::cout << "Sum of elements with odd index: " << sum << std::endl;

    return 0;
}