Write a bytestodecimal program so that

   bytestodecimal f

reads bytes from the file named f
and prints each byte as a decimal number,
right-justified (padded with spaces) to four characters.
Your program must start a new line
after every 10th byte and at the end of file
(if the end of file does not come after a 10th byte).

For example, the output

    84 104 105 115  32 105 115  32  97  32
   116 101 115 116  46  32  84 104 105 115
    32 105 115  32 111 110 108 121  32  97
    32 116 101 115 116  46  10

means that the file contained byte 84 ('T'), byte 104 ('h'), etc.

If there is any problem reading the file
or writing to stdout,
print a detailed description of the problem on stderr and exit.