[Tutor] How to ignore some decimal values?

[Titu Kim]

Hi there,
   Do someone has any idea on keeping the floor value
of a fixed decimal point n? For instance:
a=12.3451
b=0.5699
c=0.0

How can i make a,b, and c become float values as
a=12.34
b=0.56
c=0.00
if my n=2. If n=3
a=12.345
b=0.569
c=0.000

Thanks for any suggestion?

Regards,

Kim Titu

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