cppRefPointerFuncMadness

#include <iostream>

int& max(int& a, int& b)
{
    return a > b ? a : b;
}

int& max(int* arrB, int* arrE)
{
    int* const arr{ arrB };
    int maxIdx{ 0 };
    for (int i{0}; arrB != arrE; ++i, ++arrB)
    {
        if (*(arrB) > *(arr + maxIdx))
        {
            maxIdx = i;
        }
    }
    return *(arr + maxIdx);
}

int& testFunc()
{
    int random{ 42};
    return random;
}

int* testFunc1()
{
    int random1{ 33 };
    return &random1;
}

void calcArr(int* arrB, int* arrE, int& pos, int& neg, int& zero)
{
    while (arrB != arrE)
    {
        if (*arrB > 0) { ++pos; }
        else if (*arrB < 0) { ++neg; }
        else { ++zero; }
        ++arrB;
    }
}

void calcArr(int* arrB, int arrSize, int& pos, int& neg, int& zero)
{
    for (int i{0}; i < arrSize; ++i)
    {
        if (arrB[i] > 0) { ++pos; }
        else if (arrB[i] < 0) { ++neg; }
        else { ++zero; }
    }
}

void boom()
{
    uint64_t bigArr[10000]{};
    std::cout << "Boom!\n";
}

void printArr(const int* begin, const int* const end)
{
    while (begin != end)
    {
        std::cout << *begin++ << ' ';
    }
    std::cout << '\n';
}

void fillArr(int* begin, const int* const end, int val)
{
    while (begin != end)
    {
        *begin++ = val;
    }
}

int main()
{
    const int srcSize{ 10 };
    int arrSrc[srcSize]{ 1,2,3,4,5,6,7,8,9,10 };
    int testArr[srcSize]{ 1,3,6,2,7,8,9,11,4,7 };
    int calcTest[srcSize]{ 0,1,2,0,-1,-6,3,0,-7,3 };
    const int destSize{ 11 };
    int arrDest[destSize]{};

    int p{};
    int n{};
    int z{};

    calcArr(calcTest, calcTest + srcSize, p, n, z);

    std::cout << "Positive: " << p << "\nNegative: " << n << "\nZero: " << z << '\n';

    ////std::cout << testFunc() << '\n';
    //int* ptr{ testFunc1() };
    //std::cout <<  *ptr << '\n';
    ////boom();
    //std::cout << *ptr << '\n';

    //int x{ 10 };
    //int y{ 20 };

    //std::cout << max(testArr, testArr + 5) << '\n';
    //std::cout << max(testArr+5, testArr + srcSize) << '\n';
    //*(max(&x, &y)) += 10;
    /*max(x, y) += 10;

    std::cout << "x = " << x << " y = " << y << '\n';*/

    //int* const ptr{ arrSrc };

    //*(ptr + 4) = 55;



    return 0;
}