problem with divide operation

[Maor Mishkin]

I have a problem with divide operation,
the example is:
double a =10.0;
double b =220.0;
double divAns = a/b;
the calculation true result is 0.04545454545454545
but for some resone the calculation is changing to get the result
0.0454545468091
if you know how can i get the system to calc the first calculation or if you
know of an object like BigNumber in java that can make
calculation with a specipic precision it could realy help me alot.
Maor

 

[Nicholas Paldino [.NET/C# MVP]]

Maor,

The reason for this is because of the representation of floating point
numbers. It can not always be exact.

However, you should be able to get a more exact result using the Decimal
structure. It is geared for greater precision when doing floating point
calculations.

Hope this helps.

 

[José Joye]

You could use decimal type:

decimal val1 = 10.0m;
decimal val2 = 220.0m;
decimal result = val1/val2;
Console.WriteLine(result);
Console.ReadLine();


This will give the expected result

José