Cannot load from int array because "" is null

could you give me a hint?

The ASCII table is arranged so that the value of the character '9' is nine greater than the value of '0'; the value of the character '8' is eight greater than the value of '0'; and so on.

So you can get the int value of a decimal digit char by subtracting '0'.

char x = '9';
int y = x - '0'; // gives the int value 9

When you divide an integer by another integer, you lose the fractional part. At least one of those numbers has to be float/double.

Edit: Hob beat me to it :(

Problem with your solution is that you perform an integer division what makes the fractional part lost.

Thanks, I haven't thougth about it :)