title: How to dynamically increase size of a 2D array
body: <p>I already know how to make a fixed array, if I know how many elements I have. For instance, for 7 elements I do something like  int array[2][4].</p>
  
  <p>But what if I have 0 elements at start(which means the array will be empty at start) and want to increase the array size as the program runs? </p>
  
  <p>Basicly, how to add a new row or column?</p>