cppArrMerge

#include <iostream>

int main()
{
    const int smallSize{ 5 };
    const int bigSize{ smallSize * 2 };

    int arrA[smallSize]{1, 3, 5, 7, 9};
    int arrB[smallSize]{1, 4, 6, 7, 10};
    int arrC[bigSize]{};

    int idxA{ 0 };
    int idxB{ 0 };
    int idxC{ 0 };

    while (idxA < smallSize and idxB < smallSize)
    {
        arrC[idxC++] = arrA[idxA] < arrB[idxB] ? arrA[idxA++] : arrB[idxB++];
    }

    while (idxA < smallSize)
    {
        arrC[idxC++] = arrA[idxA++];
    }

    while (idxB < smallSize)
    {
        arrC[idxC++] = arrB[idxB++];
    }

    for (int idxC{ 0 }; idxC < bigSize; ++idxC)
    {
        std::cout << arrC[idxC] << ' ';
    }
    std::cout << '\n';
    return 0;
}