Primitive Data

9. Floating Point Literals

Answer:

No. For most programs using variables of type double will cost only a few extra bytes.
This is insignificant in a program thousands of bytes long.

Floating Point Literals

Sometimes you need to explicitly ask for a single-precision float literal. Do this by putting a lower case f or upper case F at the end, like this:

      123.0f

     -123.5F

-198234.234f

 0.00000381F

Sometimes you need to explicitly ask for a double literal. Do this by putting a lower case d or upper case D at the end, like this:

      123.0d

     -123.5D

-198234.234d

 0.00000381D

Remember, that without any letter at the end, a floating point literal will automatically be of type double .

Question 9:

Do you think that the following is legal?

8912D