Here is the loop for reference.
  int r = 2;
  int n = 1;
  while(n < 10)
  {
    if(n % 2 == 0)
    {
      n = n + 1;
      r = r * r;
    }
  }
    
    
    | n | r | |
| 1 | 2 | |
| 2 | 2 | |
| 3 | 4 | |
| 4 | 4 | |
| 5 | 16 | |
| 6 | 16 | |
| 7 | 32 | |
| 8 | 32 | |
| 9 | 64 | |
| 10 | 64 | 
The last line shows the values of n and r when the top of the loop is reached but the loop is finished.