| Q1: | The output of the Interest program looks sloppy . How do I control how many digits are displayed? |
| A1: | The easiest way to control the number of decimal digits is to use the printf function, which is covered in Hour 9, "More Functions and Operators." |
| Q2: | Does Perl have a function for rounding? |
| A2: | The printf function usually does what you want for rounding when displaying numbers . If you really need the round function, check out the POSIX module, which has this function and many more. |
| Q3: | How large (or small) of a number will Perl let me manipulate? |
| A3: | |
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