intergers and string manipulation

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1.25/5 (4 votes)

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Hi there
I am developing a c# application which involves adding up numbers eg

1+2+3+4=Answer
When one of the numbers is missing, application fails to sum up but instead it throws an exception.

How can i continue adding in case some numbers are missing, and i just add the available numbers

In case if all the numbers are missing, i want the answer to evaluate to a string char like X.
Thanks in advance

Posted 14-Jul-11 8:39am

katumbamartin

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Sergey Alexandrovich Kryukov 14-Jul-11 14:41pm

Not clear missing from what and why all that. Also, there is no question. What's the problem?
--SA

[no name] 14-Jul-11 14:43pm

What do you mean by missing? What data type do you use to store the numbers?

RaviRanjanKr 14-Jul-11 15:01pm

Please be more specific while asking question. we need more clear information regarding to your question. :)

wizardzz 14-Jul-11 16:54pm

It does sound like the code would be simple, so why not post what you have so far?

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wizardzz · Answer 1 · 2011-07-14T08:40:00

Solution 1

You should probably load those values into an array or list, or any sort of collection and add by looping through them, that way the actual number of variables is irrelevant. To get the answer in a string format just use .ToString() on it.

Posted 14-Jul-11 8:40am

wizardzz

fcronin · Answer 2 · 2011-07-14T11:19:00

Solution 2

Give this a shot...

MIDL

string tmp = "1+2+3+5";
int total = tmp.Split('+').ToList().Sum(item => Convert.ToInt32(item));
Console.WriteLine(tmp + " = " + total.ToString());

Posted 14-Jul-11 11:19am

fcronin

johannesnestler · Answer 3 · 2011-07-14T23:57:00

Very good question... Hahaha. Come on give us some code! Sounds like it must be some trivial bug, missunderstanding or desing mistake.
So let's start guessing:
I think you read the numbers from some controls (textbox?) where the user can enter numbers.
You try to convert those numbers from the textbox strings to prepare them for your "calculation".
If one of the textboxes was left empty you can not convert/parse it to a number, this is where the exception is thrown.

Good guesses?
Anyway, please improve your question (show code). If you talk about exceptions allways tell us which one!