Java

[dense cipher]

<@&987246399047479336> please have a look, thanks.

[torpid shore]

integer division

ok

[jaunty dome]

I use calculator to calculate and get the answer is 95 but why after run the system give me the answer is 67 ? Help 🙏

[torpid shore]

as I already said your problem is 9 / 5

its using integer division

which will evaluate to 1

if you instead do 9.0 / 5.0 you will get 1.8

[jaunty dome]

But 1.8 mathematical carry not became 2 ？

[torpid shore]

what?

1.8

is 1.8

[real torrent]

if you want to round, you need to manually do it

there's Math.ceil if you want to round up

[jovial kestrel]

Integer division does not round, it just "cuts" out the decimal part

Some examples:

• 21/2 would be 10.5, but integer division makes it 10
• 10/3 would be 3.333... but integer division makes it 3
• 1/4 would be 0.25 but integer division makes it 0

You see?

[graceful zealot]

That's bad examples because they show rounding down
Also rounding down = truncating, they both give the same result

And... no, integer division doesn't round down and doesn't truncate either, it rounds toward 0, so -2/3 == 0, not -1

[true osprey]

I think most people refer to truncating as -1.5 -> -1