Solution of floating-point calculation problem in C #

Let 's look at a computational question and look at the arithmetic abilities of everyone.

0.1 +0.1 +0.1-0.3 equals a few?

People may say such a simple question, is not despise me? Must be equal to 0.

If the direct calculation is not a problem, but if you use a computer?

The time to witness a miracle is here, look at the code:

void Main () {    var f = 0.1 +0.1 +0.1-0.3;    Console.WriteLine ("F=={0}", f);}

Operation Result:

This is because of the problem of computer accuracy, in the computer's internal storage and operation of the lack of precision, and so on, I may not understand the explanation, however, you can use the following solution:

void Main () {    //var f = 0.1 +0.1 +0.1-0.3;    Console.WriteLine ("F=={0}", f);        var f1 = new Decimal (0.1) + New Decimal (0.1) + New Decimal (0.1)-New decimal (0.3);    Console.WriteLine ("F1 = = {0}", F1);}

Operation Result:

This is the result of the normal operation.

La La la!