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while pival-pi >err?

>>7811091
>matlab geniuses
>approximating via series
toppu kekku

Yeah, you do need to use a while loop.

In informal terms, you're doing this

while |(pi - piVal) / (pi) * 100| > err

add another term to the approximation
increment my location in the series


when that's done you return your last piVal and how many terms you needed

God, yall are better help than my teacher.

>>7811091
It should be something like this:

Difference = 1;
Previous = 0;
Next = 1;
Precision = DESIRED NUMBER OF DECIMAL PLACES OF PI;

while Difference > 0
Current = Previous + (4/Next) - (4/(Next+2));
Difference = floor(Current*(10^Precision)) - floor(Previous*(10^Precision));
end
disp(Current);

>>7811550
Oh, and some part of the while loop where you increment Next by 4 each time it loops.
Can't be bothered checking it in matlab, but it should hopefully work.

>>7811550
>>7811552
i think this loop could work

while Difference > 0
Current = Previous + (4/Next) - (4/(Next+2));
Difference = floor(Current*(10^Precision)) - floor(Previous*(10^Precision));
Next=Next+4;
Previous=Current;
end