Adding Integers and Decimals

Question

I am currently creating a new maths based application and would like to know how you add, subtract and multiply decimals and integers. So for example say I have 2.5 and want to add 2, the answer should be 4.5 but I always seem to get 2.7.

Please help, thanks in advance.

Vulpes · Answer

Well I'd expect a line like this to give the right answer: double d = 2.5 + 2; // 4.5 because the integer 2 will be automatically converted to a double and then added to the other double to give a double result. The same applies to subtraction and multiplication. However you can sometimes get unexpected results when you divide integers by integers. For example: double d = 3/2; // 1 rather than 1.5 To ensure you don't get any nasty surprises always suffix integers with 'd' so they're treated as doubles: double d = 3d/2d; // 1.5 If you're using the decimal type rather than double then suffix both decimals and integers with 'm'.