cppArrayManipulationCompar

#include <iostream>

int main()
{
    const int arrSize{ 10 };
    int arr[arrSize]{ 0,1,2,3,4,5,6,7,8,9 };
    int arrCopy[arrSize];

    int copy{ 0 };

    //int a{ 10 };
    //int b{ 20 };
    //int copy{ 0 };

    //copy = a;
    //a = b;
    //b = copy;
    //
    //a = a + b; // 10 + 20 = 30 // a = 30 b = 20
    //b = a - b; // 30 - 20 = 10 // a = 30 b = 10
    //a = a - b; // 30 - 10 = 20 // a = 20 b = 10

    //a += b; // 10 + 20 = 30 // a = 30 b = 20
    //b = a - b; // 30 - 20 = 10 // a = 30 b = 10
    //a -= b; // 30 - 10 = 20 // a = 20 b = 10


    //std::cout << "a = " << a << '\n';
    //std::cout << "b = " << b << '\n';


    for (int i{ arrSize - 1 }; i >= 0; --i)
    {
        arrCopy[arrSize - 1 - i] = arr[i];
    }

    for (int i{ 0 }; i < arrSize; ++i)
    {
        arr[i] = arrCopy[i];
    }

    //for (int i{ 0 }; i < arrSize / 2; ++i)
    //{
    //    copy = arr[i];
    //    arr[i] = arr[arrSize - 1 - i];
    //    arr[arrSize - 1 - i] = copy;
    //}

    //for (int head{ 0 }, tail{arrSize - 1}; head < tail; ++head, --tail )
    //{
    //    copy = arr[head];
    //    arr[head] = arr[tail];
    //    arr[tail] = copy;
    //}

    for (int i{ 0 }; i < arrSize; ++i)
    {
        std::cout << arr[i] << ' ';
    }
    std::cout << '\n';

    // 9 8 7 6 5 4 3 2 1 0

    return 0;
}