Calculate π value using Leibniz_formula_for_π accurate to N decimal places. Input N, output the result. Use function defied in ../Homework_FractionTruncate to truncate out other digits. Keep in mind that the exact formula is calculating π/4, you probably should start with 4 instead 1 to gain exact accuracy. Warning: the algorithm is slow, do not panic, but keep code as simple as possible.
4
3.1416
Hint: to gain performance keep anything on registers