Cash Register

[Ryan Q.]

It works, i'm just posting it hoping someone could do better.

print ''
print ' *** CASH REGISTER ***'
print ' PRESS 0 AND THEN ENTER TO TOTAL'
b = 1
t = 0
v = 0
while b != 0:
a = 1
s = 0
print ''
while a != 0:
a = input(' ITEM $ ')
s = s + a
print ' TOTAL $',s
v = v + s
cash = input(' CASH $ ')
change = cash - s
print ' CHANGE $',change
print ' '
print ' TOTAL SLAES $ ',v

[Kirk Strauser]

Re: Cash Register

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At 2004-05-11T18:32:33Z, RQuinn15@optonl ine.net (Ryan Q.) writes:
[color=blue]
> It works, i'm just posting it hoping someone could do better.[/color]

Of that I'm sure. :-)
[color=blue]
> while b != 0:[/color]

b never goes to 0.

Your variables have meaningless names.

You misspelled 'SALES'.

I would not give that a high grade.
- --
Kirk Strauser
The Strauser Group
Open. Solutions. Simple.

http://www.strausergroup.com/

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[Greg Ewing]

Re: Cash Register

Ryan Q. wrote:[color=blue]
> It works, i'm just posting it hoping someone could do better.
>
> print ''
> print ' *** CASH REGISTER ***'
> print ' PRESS 0 AND THEN ENTER TO TOTAL'[/color]

I notice it's nicely agnostic about what kind
of numbers are used. This will come in very handy
if complex currency is ever introduced...

ITEM $ 3.50
ITEM $ 2.30j
ITEM $ 1+2j
ITEM $ 0
TOTAL $ (4.5+4.3j)
CASH $ 50
CHANGE $ (45.5-4.3j)

TOTAL SLAES $ (4.5+4.3j)

--
Greg Ewing, Computer Science Dept,
University of Canterbury,
Christchurch, New Zealand

http://www.cosc.canterbury.ac.nz/~greg

[Larry Bates]

Re: Cash Register

Let's see:

1) If user inputs text, program crashes (not good)
Probably should use raw_input and put float() inside
a try block.

2) I can't figure out how program ever stops (e.g. b
is set to 1 and never reset to exit the while b!=0
loop).

3) Sales is mispelled in the last print statement

4) Use inplace incrementing (e.g. v+=s, s+=a)
instead of s=s+a, v=v+s

5) What is t variable used for?

Good Luck.

"Ryan Q." <RQuinn15@opton line.net> wrote in message
news:d1bd056c.0 405111032.3b2c4 11f@posting.goo gle.com...[color=blue]
> It works, i'm just posting it hoping someone could do better.
>
> print ''
> print ' *** CASH REGISTER ***'
> print ' PRESS 0 AND THEN ENTER TO TOTAL'
> b = 1
> t = 0
> v = 0
> while b != 0:
> a = 1
> s = 0
> print ''
> while a != 0:
> a = input(' ITEM $ ')
> s = s + a
> print ' TOTAL $',s
> v = v + s
> cash = input(' CASH $ ')
> change = cash - s
> print ' CHANGE $',change[/color]
[color=blue]
> print ' '
> print ' TOTAL SALES $ ',v[/color]

[Martin Maney]

Re: Cash Register

Greg Ewing <greg@cosc.cant erbury.ac.nz> wrote:[color=blue]
> I notice it's nicely agnostic about what kind
> of numbers are used. This will come in very handy
> if complex currency is ever introduced...[/color]
[color=blue]
> ITEM $ 3.50
> ITEM $ 2.30j
> ITEM $ 1+2j
> ITEM $ 0
> TOTAL $ (4.5+4.3j)
> CASH $ 50
> CHANGE $ (45.5-4.3j)[/color]

Beautiful demonstration of the principle behind the rule that items
with complex prices may only be sold in conjugate pairs! :-)

--
automation: replacing what works with something that almost works,
but which is faster and cheaper. - attributed to Roger Needham