Scratch
archived forums
#1 2011-06-06 10:23:14
- scimonster
- Community Moderator
- Registered: 2010-06-13
- Posts: 1000+
Rounding
What's the squeak code to round a number?
Is it something like this?:
round t1.
Moderator | Scratch Wiki Administrator | Coders' Shed AdministratorScratch 2.0 is just around the corner! Prepare for the transition by beta testing. Your feedback will help make it the best it can be!
Offline
#2 2011-06-06 10:35:48
Re: Rounding
I think t1 rounded, lemme check.
[edit]YEP![/edit]
Last edited by Pecola1 (2011-06-06 10:37:10)
If you are reading this, please read to the end, because if you don't you won't know what's at the end. Don't just skip to the end though otherwise you won't be able to read the middle, which is most important. Now you must be wondering why you just read all that, the reason is you may have not noticed something, read it again and see if you notice it this time
Offline
#5 2011-06-06 10:37:13
- scimonster
- Community Moderator
- Registered: 2010-06-13
- Posts: 1000+
Re: Rounding
Thanks people!
Moderator | Scratch Wiki Administrator | Coders' Shed AdministratorScratch 2.0 is just around the corner! Prepare for the transition by beta testing. Your feedback will help make it the best it can be!
Offline
#6 2011-06-06 10:40:09
- scimonster
- Community Moderator
- Registered: 2010-06-13
- Posts: 1000+
Re: Rounding
Hmm, I can't get this Panther block to work. Here's my code:
round $Number$ to nearest $Number$
r
Code:
| t3 | t3 _ t1 / t2 rounded. abs t3 * t2 - t1 < abs t3 * t2 + 1 - t1 ifTrue: [^ true]. ^ false
What's wrong?
Moderator | Scratch Wiki Administrator | Coders' Shed AdministratorScratch 2.0 is just around the corner! Prepare for the transition by beta testing. Your feedback will help make it the best it can be!
Offline
#7 2011-06-06 13:05:23
- scimonster
- Community Moderator
- Registered: 2010-06-13
- Posts: 1000+
Re: Rounding
scimonster wrote:
Hmm, I can't get this Panther block to work. Here's my code:
round $Number$ to nearest $Number$
rCode:
| t3 | t3 _ t1 / t2 rounded. abs t3 * t2 - t1 < abs t3 * t2 + 1 - t1 ifTrue: [^ true]. ^ falseWhat's wrong?
Do I need brackets or something between them, to make sure it evaluates it like this? :
(abs ( ( t3 * t2) - t1) ) < (abs ( ( t3 * ( t2 + 1) ) - t1) )
Moderator | Scratch Wiki Administrator | Coders' Shed AdministratorScratch 2.0 is just around the corner! Prepare for the transition by beta testing. Your feedback will help make it the best it can be!
Offline
#8 2011-06-06 13:32:44
- TheSuccessor
- Scratcher
- Registered: 2010-04-23
- Posts: 1000+
Re: Rounding
scimonster wrote:
scimonster wrote:
Hmm, I can't get this Panther block to work. Here's my code:
round $Number$ to nearest $Number$
rCode:
| t3 | t3 _ t1 / t2 rounded. abs t3 * t2 - t1 < abs t3 * t2 + 1 - t1 ifTrue: [^ true]. ^ falseWhat's wrong?
Do I need brackets or something between them, to make sure it evaluates it like this? :
(abs ( ( t3 * t2) - t1) ) < (abs ( ( t3 * ( t2 + 1) ) - t1) )
I think needs to go after the equation.
Also, there's a shortcut for returning stuff like that. Instead of this:
( ( (t3 * t2) - t1) abs ) < ( ( (t3 * t2) + 1) abs - t1) ifTrue: [^ true].
^ false
Use this:
^ ( ( (t3 * t2) - t1) abs ) < ( ( (t3 * t2) + 1) abs - t1)
/* No comment */
Offline
#9 2011-06-06 14:08:40
Re: Rounding
scimonster wrote:
scimonster wrote:
Hmm, I can't get this Panther block to work. Here's my code:
round $Number$ to nearest $Number$
rCode:
| t3 | t3 _ t1 / t2 rounded. abs t3 * t2 - t1 < abs t3 * t2 + 1 - t1 ifTrue: [^ true]. ^ falseWhat's wrong?
Do I need brackets or something between them, to make sure it evaluates it like this? :
(abs ( ( t3 * t2) - t1) ) < (abs ( ( t3 * ( t2 + 1) ) - t1) )
Put the brackets, if it takes them away automatically you don't need them.
If you are reading this, please read to the end, because if you don't you won't know what's at the end. Don't just skip to the end though otherwise you won't be able to read the middle, which is most important. Now you must be wondering why you just read all that, the reason is you may have not noticed something, read it again and see if you notice it this time
Offline
#10 2011-06-06 14:25:03
- scimonster
- Community Moderator
- Registered: 2010-06-13
- Posts: 1000+
Re: Rounding
I currently have this as the code:
round $Number$ to nearest $Number$
-Code:
| t3 | t3 _ t1 / t2 rounded. ( ( (t3 * t2) - t1) abs ) < ( ( (t3 * t2) + 1) - t1) abs ifTrue: [^ ( ( (t3 * t2) - t1) abs ) rounded]. ^ ( ( (t3 * t2) + 1) - t1) abs rounded
It always reports 0 though!
Moderator | Scratch Wiki Administrator | Coders' Shed AdministratorScratch 2.0 is just around the corner! Prepare for the transition by beta testing. Your feedback will help make it the best it can be!
Offline
#11 2011-06-06 14:39:07
- TheSuccessor
- Scratcher
- Registered: 2010-04-23
- Posts: 1000+
Re: Rounding
round $Number to nearest $Number$
^ ((t1 / t2) rounded) * t2
Does this work?
/* No comment */
Offline
#12 2011-06-06 14:41:06
- scimonster
- Community Moderator
- Registered: 2010-06-13
- Posts: 1000+
Re: Rounding
TheSuccessor wrote:
round $Number to nearest $Number$
^ ((t1 / t2) rounded) * t2
Does this work?
Yes, thank you!
How was that so simple? 
Moderator | Scratch Wiki Administrator | Coders' Shed AdministratorScratch 2.0 is just around the corner! Prepare for the transition by beta testing. Your feedback will help make it the best it can be!
Offline