[Tutor] Advanced Calculator Program...

[Gregor Lingl]

. Sm0kin'_Bull schrieb:
> I want to make caculator program which enables me to
> enter 2numbers and mathsmatics sign and calculates it.
> I think this is too difficult for newbie like me...
> 
> Please input data
> 
> Number1:
> Mathsmetics Sign:
> Number2:
> 
> (Number1) (Sign) (Number2) = (Result)
> 
> 
> I wrote this but, Error occurs
> 
> print "Please input data"
> number1 = int(raw_input("\nNumber1: "))
> sign = (raw_input("\nMathsmetics Sign: "))
> number2 = int(raw_input("\nNumber2: "))
> 
> total = number1 sign number2
> print number1, sign, number2, '=', total
> 

hey, bull! that's a bit tricky. You had a nice
idea, but it doesn't work in Python. The point is,
that you must not use names for operators in
arithmetic expressions. Those operators have
to be used literally.

*One* way to solve your problem is, e. g., to
use a branching statement for checking, which
operator is used.

So replace the line

total = number1 sign number2

by something similar to

if sign == "+":
     total = number1 + number2
elif sign == "-":
     total = numer1 - number2
... (for other operators ..)

HTH,
Gregor


> please help me
> 
> 
> 
> Cheers! :)
> 
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-- 
Gregor Lingl
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Autor von "Python für Kids"
Website: python4kids.net