Problem with using math.pow in C#

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1.00/5 (2 votes)

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I'm just a beginner.
But why is this showing error ? I think I have used the syntax as per the one given in MSDN site.

double power;
double baseNumber;
double FINALnumber ;

FINALnumber  = Math.Pow(baseNumber, power);

Posted 20-Jun-13 2:07am

Allwin456

Updated 20-Jun-13 2:31am

Rajesh Anuhya

v5

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Rajesh Anuhya 20-Jun-13 8:08am

What is the Error message?
--RA

Allwin456 20-Jun-13 10:54am

this is the error message - Use of unassigned local variable 'power' .. I can rectify it by initializing the values but is there any way to initialize value during run time ?

for eg, I can rectify the error as answered by others like this -

double power = 10;
double baseNumber = 5;

double FinalNumber = Math.Pow(power, baseNumber);

But can I assign the value to 'power' and 'baseNumber' during runtime ?

Allwin456 20-Jun-13 11:08am

yeah I found it -

double baseNumber = 10;
int power = int.Parse(Console.ReadLine());
double limit ;

limit = Math.Pow(basenumber, power);

2 solutions

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CPallini · Accepted Answer · 2013-06-20T02:15:00

Solution 1

You are trying to use the uninitialised variable power. Try something similar to:

C#

double power = 3;
double limit = Math.Pow(10, power);

Posted 20-Jun-13 2:15am

CPallini

Comments

Ron Beyer 20-Jun-13 8:16am

Got me by mere miliseconds +5 :)

CPallini 20-Jun-13 10:46am

Thanks.

Rajesh Anuhya 20-Jun-13 9:04am

Have my +5

CPallini 20-Jun-13 10:46am

Thanks.

Allwin456 20-Jun-13 10:55am

But can I assign the value to 'power' and 'baseNumber' during runtime ? Is there any way ?

CPallini 20-Jun-13 11:11am

Of course there is a way. You may, for instance, allow the user enter the values.

Ron Beyer · Accepted Answer · 2013-06-20T02:15:00

Solution 2

Because you haven't assigned anything to power or base number.

C#

double power = 10;
double baseNumber = 5;

double FinalNumber = Math.Pow(power, baseNumber);

Posted 20-Jun-13 2:15am

Ron Beyer

v2

Comments

Rajesh Anuhya 20-Jun-13 9:04am

Have my +5

CPallini 20-Jun-13 10:47am

My 5 too.