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Re: Python - Caeser Cipher Not Giving Right Output

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On Thursday, March 20, 2014 11:16:50 PM UTC-4, Dave Angel wrote:
> dtran.ru@gmail.com Wrote in message:
> 
> > Hello good people I am working on a caeser cipher program for class. However, I ran into a problem with my outputs. Up to a certain point for example:
> 
> > 
> 
> > 1. two('y', 'z')
> 
> > 
> 
> > Would give a '\x92' output instead of a 'x' output.
> 
> > 
> 
> > Currently this is my code so far:
> 
> > 
> 
> > def chartonum(ch):
> 
> >     return ord(ch) - 97 
> 
> > 
> 
> > def numtochar(n):
> 
> >     return chr(n + 97) 
> 
> > 
> 
> > def two(c1 , c2):
> 
> >     c1 = chartonum(c1)
> 
> >     c2 = chartonum(c2)
> 
> >     return numtochar(c1 + c2 %26)
> 
> 
> 
> You're missing some parentheses in that line. To test your
> 
>  understanding,  try picking some numbers for c1 and c2. Display
> 
>  c1 + c2 % 26, and see if the result is always between 0 and
> 
>  25.
> 
> 
> 
> Or look up the term precedence in your textbook.
> 
> 
> 
> > 
> 
> > I am thinking I have messed up on my mod 26, however, I am at a lost where I might have went wrong in that. Any help would be appreciated.
> 
> > 
> 
> 
> 
> 
> 
> -- 
> 
> DaveA

Thanks for your input Dave. Would the line be:

return numtochar(c1 + c2 %26) 

c1 and c2 are lower-case letters. And I was wondering how I would add the partenthesis because I tried:

return numtochar(c1 + c2 (%26)) and it gave me an error. 

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Python - Caeser Cipher Not Giving Right Output dtran.ru@gmail.com - 2014-03-20 19:50 -0700
  Re:Python - Caeser Cipher Not Giving Right Output Dave Angel <davea@davea.name> - 2014-03-20 23:16 -0400
    Re: Python - Caeser Cipher Not Giving Right Output dtran.ru@gmail.com - 2014-03-20 20:23 -0700
      Re: Python - Caeser Cipher Not Giving Right Output Dave Angel <davea@davea.name> - 2014-03-21 00:02 -0400
      Re: Python - Caeser Cipher Not Giving Right Output Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-03-21 03:58 +0000
        Re: Python - Caeser Cipher Not Giving Right Output dtran.ru@gmail.com - 2014-03-20 21:23 -0700
          Re: Python - Caeser Cipher Not Giving Right Output Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-03-21 09:50 +0000
      Re: Python - Caeser Cipher Not Giving Right Output Rustom Mody <rustompmody@gmail.com> - 2014-03-20 21:02 -0700
      Re: Python - Caeser Cipher Not Giving Right Output Ian Kelly <ian.g.kelly@gmail.com> - 2014-03-22 08:22 -0600
        Re: Python - Caeser Cipher Not Giving Right Output Rustom Mody <rustompmody@gmail.com> - 2014-03-22 10:29 -0700

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