Running test test_printf...
1
2
3
4
5
         6
0000000007
0000000008
9,9,9,9
1.0
2.000000
3.000000
4
5
  6.000000
7.0000000000
8.0000000000
9.000000,9.000000,9.000000,9.000000
|a|   b|c   |
|aa|  bb|cc  |dddddddddd|
|0x1| 0x2|0x3 |
OK
