array<int,100> arrayName

function(array<> arrayName)

#include <array>

template <size_t N>
void ArrayFunc(std::array<int, N> arr)
{
    // Do something with `arr`
}

int main()
{
    std::array<int, 10> arr10;
    std::array<int, 20> arr20;

    ArrayFunc(arr10);
    ArrayFunc(arr20);

    return 0;
}