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Kharybdis

Thu Oct 11, 2007 7:58 pm


How do you reverse numbers?

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k... this problem is really bugging me.... ive tried to do it for like 3 hrs and i just cant get it to work.

The problem is to get a real number in the range 0 to 1 that contains 3 decimals. Then you reverse the number and display the sum.

Ex. user enters 0.934 and the program adds 0.439 to 0.934
anyone help?


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HeavenAgain

Thu Oct 11, 2007 8:47 pm


RE:How do you reverse numbers?

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Snip! We don't just provide answers here.

any shorter way? turing = :cry:


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Clayton

Thu Oct 11, 2007 8:53 pm


RE:How do you reverse numbers?

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I suggest you try looking into realstr(), strreal(), and string manipulation


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Tony

Thu Oct 11, 2007 9:23 pm


RE:How do you reverse numbers?

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as Clayton points out, working with characters is easier. Though Mathematically, you could also use powers of 10 and floor() function to get individual digits.


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Kharybdis

Fri Oct 12, 2007 5:48 am


Re: How do you reverse numbers?

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String manipulation... i wish i could just do this :
var num,num1 : real
var ans1,ans2,ans3: string


floor(num)
num(3)= ans1
num(4) = ans2
num(5) = ans3
put floor(num) +ans1+ans2+ans3
num1 := floor(num) +ans1+ans2+ans3 (combine those statements not add....)

lol
lots of wrong there.....but that my was my original idea proved wrong.


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Saad

Fri Oct 12, 2007 5:53 am


RE:How do you reverse numbers?

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Well why are you flooring the number as it gets rid of the number? because its between 0-1 which results as 0


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Kharybdis

Fri Oct 12, 2007 6:50 am


Re: How do you reverse numbers?

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Im flooring num. I WANT it to always be zero.

like floor(num)+"." plus ans1 plus ans2 plus ans3.


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Tony

Fri Oct 12, 2007 12:33 pm


Re: RE:How do you reverse numbers?

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Actually you're not too far off.

We could probably assume that floor(num) will always be 0. Or rather "0".

And + does join, not add strings.
I suggest you try looking into realstr(), strreal()
or intstr() and strint(). Depends on if you get a hold of digits before or after you convert everything into a string.


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Kharybdis

Sat Oct 13, 2007 2:54 pm


Re: How do you reverse numbers?

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i got it like the day after i posted this ....
final answer is..

var num : string
var num1, number : string
put "Please enter a number in the range of 0 to 1. Must contain 3 decimals."
get num
num1 := num (5) + num (4) + num (3)
number := "0." + num1

put "The sum of your number, and its reverse is ", strreal (number) + strreal (num)

lol took me 3 hrs to figure out a 3 minute typed code.

Its not error trapped or proofed or anything like that. If you enter 0.2341 or 0.12 it crashes. or even 1.242


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Tony

Sat Oct 13, 2007 3:10 pm


Re: How do you reverse numbers?

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lol took me 3 hrs to figure out a 3 minute typed code.
Heh, it actually should be this way. If you figure something out in 3 minutes, but it takes your 3 hours to type it up -- you're doing something very very wrong (and I did see this happen).


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Kharybdis

Sat Oct 13, 2007 5:00 pm


Re: How do you reverse numbers?

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Its not necessarily that case. What if you were given a project to do with a concept idea, but even though the idea is very simple, it takes a lot of time to actually make it work. Still, i basically agree with ya.