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Topic: float-expressions (Read 252 times) |
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pitaru
 
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float-expressions
« on: Nov 5th, 2003, 5:47pm » |
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I notice many programming bugs that are related to this matter:
println(451/100); will return a (floor) rounded integer - the number 4.
to get the number 4.51, we would have to do:
println(451/100.0);
or
println(451.0/100);
This is especially confusing with something like:
println(451/width);
I'm wondering if it wouldn't be more intuitive to have the pre-processor convert the expression (or at least width/height) to a float.
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fry
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Re: float-expressions
« Reply #1 on: Nov 5th, 2003, 8:07pm » |
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this is a bummer but it's pretty essential to programming, so it's something that has to be learned.
a compromise might be to have variables called widthf and heightf or something like that, which are floating-point values for the width and height, since they're so commonly needed in that form (they're needed in int form just as often, so it's a tossup which is the default).
with the newer preproc, the syntax for float(width) now works, which is a lot less annoying. it's possible you can also do float(451/100) and have that do a floating point calc, though i'm not sure offhand.
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