Anyone know how to make this C++ Program (involves 2-D arrays and arranging numbers)?

So the program is is that I have some random array that's a 4 by 5 filled with just numbers, like so:

{16,22,99,4,18,

258,4,101,5,98,

105,6,15,2,45,

33,88,72,16,3}

and I have to create a program that takes those 20 numbers and sorts them in increasing order in a 1-D array called 'sort'.

So far, this is what I have:

void main()

{

system("cls");

const int i = 4;

const int j = 5;

int R, C, S, max;

R = 0;

C = 0;

S = 0;

const int k = 20;

int sort[k];

int DD [i][j] = {16,22,99,4,18,

----------------258,4,101,5,98,

----------------105,6,15,2,45,

----------------33,88,72,16,3};

-------for (C = 0; C < j; C++)

-------{

-------------for (R = 0; R < i; R++)

-------------{

-------------}

-------}

}

So basically, I have nothing right now because I can't logically think this whole process through and I just need a fresh set of eyes to tell me a way to go about doing this. If someone told me how to program it, I could do it, but I can't think of the way to do this program on my own. I'm just stumped on how to do this. (and ignore all the hyphens, just using them to make the program easier to read)

So if anyone could give me some advice on this, I'd greatly appreciate it.