double type precision in C# [duplicate]

Question

I have this code in C#

double result = 480 - 460.8;

Why result is 19.199999999999989 instead of 19.2?

Answer 1

you should format your double precision of the result output:

double result = 480 - 460.8; 
String.Format("{0:0.##}", result);

test example:

https://ideone.com/27OfP4

update:

there is another way without string formatting you can use method Math.Round with two digits after decimal place :

Math.Round(result,2);

example:

https://ideone.com/2Q6RPD