title: 2D array with different size for each line in C
body: <p>I would like to know if it's possible to create a 2D array in C with different size of lines.</p>
  
  <p>I know a 2D array is an array that stores other arrays. But what if the arrays are size different?
  Like something like this (a "T" is a usable position of the array)</p>
  
  <pre><code>   0  1  2  3  4
  0  T  T  
  1  T  T  T  T  T
  2  T  T  T
  3  T  T  T  T  
  </code></pre>
  
  <p>If possible, how to do it? Just like a normal 2D array?</p>