🚀 go-pugleaf

I want to use an array to create a 2d matrix and fill it with random data in a 
loop.  I want to give the user the option of changing the size of the array 
and looping that new one, filling it with random data.  Then I will compare 
the output of the two.  But I don't know what size the user will want the 
array to be.


int matrix[13][45]  first time
int matrix[2][10]  second time
int matrix[40][40] third time

how can I change the size while the program is running.  Using visual c++ 1.52 
I try to say matrix[x][y] but I need constants inside of the [ ] and I don't 
know of another approach, my books are not very helpful.