alice-teacher Please help! Student's program behaving strangely

[Edward Bujak]

Roger 
In "Alice 2.2 6/10/2009" this returns the digit in the one's (units) place.I changes the number and it worked.Currently it only returns the units place, but it works.
I put print statements at the top of getDigit() to print out the values of the two parameters and they are correct.
I would say this is a version issue.

			



 
Mr. Edward Bujak
Hope Charter High School
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From: rwistar at hotchkiss.org
To: alice-teachers at lists.andrew.cmu.edu
Date: Fri, 23 Mar 2012 11:37:13 -0400
Subject: alice-teacher Please help! Student's program behaving strangely

Please help! One of my students is trying to write a program that can take
a three-digit number and break it down into its component digits (e.g.,
683 = 6,8,3). His program seems correct to me. There is a function called
getDigit() that right now just finds the ones digit by calculating the
remainder of the number / 10. But for some reason, his method is returning
1 every time. Here are the tests we have done:
 
1) If he replaces the parameter in his function with "683", it works
properly.
2) If he copies the world.remainder() call into his myFirstMethod(), it
works properly.
 
So it seems that somehow the parameter value for num is being lost
somewhere between his myFirstMethod() and the remainder() method. What the
heck is going on?
 
Thanks!
Roger Wistar
rwistar at hotchkiss.org
 

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