ROUNDING???

[katie smith]

in python im doing the problem 255/494

it keeps giving me 0 instead of .51....
what am i doing wrong?

please help me I have been looking for hours


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[7stud]

in python im doing the problem 255/494

it keeps giving me 0 instead of .51....
what am i doing wrong?

please help me I have been looking for hours

      ___________________________________________________________________________ _________
Never miss a thing.  Make Yahoo your home page.http://www.yahoo.com/r/hs

An integer divided by an integer produces an integer. In computer
programming, that's called 'integer arithmetic', and any fractional
part of the result is chopped off(not rounded). If your arithmetic
involves at least one float, then you will get a float as an asnwer:


print 255/494
print 255.0/494
print (255 * 1.0)/494

--output:--
0
0.516194331984
0.516194331984

 

[Jeff Schwab]

An integer divided by an integer produces an integer. In computer
programming, that's called 'integer arithmetic', and any fractional
part of the result is chopped off(not rounded). If your arithmetic
involves at least one float, then you will get a float as an asnwer:


print 255/494
print 255.0/494
print (255 * 1.0)/494

--output:--
0
0.516194331984
0.516194331984

Not that this behavior is expected to change in the future, such that
255 / 494 will actually perform floating-point division. The way to
achieve flooring division will be 255 // 494.

 

[Aahz]

in python im doing the problem 255/494

it keeps giving me 0 instead of .51....
what am i doing wrong?

0.40000000000000002

In addition:
_Feature((2, 2, 0, 'alpha', 2), (3, 0, 0, 'alpha', 0), 8192)

Therefore this works in Python 2.2 and higher.

 

[subeen]

You can use the round() function. And if you want to print, use %0.2f


regards,
Subeen.
http://love-python.blogspot.com/

 

[Asun Friere]

An integer divided by an integer produces an integer. In computer
programming, that's called 'integer arithmetic', and any fractional
part of the result is chopped off(not rounded).

In case you care, the "chopped off" bit is given by the modulo
operator '%'. So integer division x/y is really like the everyday y
goes into x, p times, remainder q, for example:
(3, 1)

If your arithmetic
involves at least one float, then you will get a float as an asnwer:

print 255/494
print 255.0/494
print (255 * 1.0)/494

or indeed "print float(255)/494"