Question

I have some C code that I’m trying to convert/wrap into a C++ class. I ran into some C literal arrays(correct me if I’m calling them wrong) and I’m not sure how to initialize them in the C++ constructor since I don’t think you can do literals, which I think are compile time specific, to something that is runtime specific.

Should I just explicitly define the array to be of a certain size and just do a strcpy, or some such, of the literal to the array in the constructor?

char sysUpTime[] = {1,3,6,1,2,1,1,3,0};

Answer 1

As an alternative to initializer lists or string manipulation, you could use something like the following (if you really wanted to):

struct Wrapper
{
    template <size_t N>
    Wrapper(const char(&arr)[N]) : vec(arr, arr+N) { }

    vector<char> vec;
};

I’ve left everything public due to chronic laziness on my part :). You can then initialise like this:

    char foo[] = { 1, 2, 3, 4, 5 };
    Wrapper bar(foo);

    copy(bar.vec.begin(), bar.vec.end(), ostream_iterator<int>(cout, ", "));