Question: Significant Digits

Hi, How do I make Maple keep track of more significant digits during calculations? I ask this because I created essentially identical sequential programs in C and Maple 10. In C, I am able to obtain answers to E-08, -09, -10, whereas in Maple 10, the results are displayed as 0, even though I input the same initial conditions in both, and they are subject to the same operations. I've placed "Digits := 20:" before printing the values I want, but that only prints the value to 20 significant digits -- e.g. in my case, 0.000 000 000 000 000 000 00 without the spaces. Thanks, Dennis
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