Do you think that the following is legal?
8912D
Yes. The 'D' will make the literal a double
(even though it lacks a decimal point).
However, to avoid confusion, always include a decimal point
in a floating point literal,
even where it is not required.
Common Practice: To avoid errors, always put digits on either side of the decimal point (in programs and in writing.) So
0.1 not .1 12.0 not 12. 8912.0D not 8912D
You will sometimes see scientific notation. The following are all double-precision literals:
1.23E+02 -1.235E+02 -1.98234234E+05 3.81E-06
Another way to say this is that the integer that follows "E" says in which direction and for how many places to shift the decimal point. Positive integers mean right shifts; negative integers mean left shifts.
What is the usual way to write this number: 1.9345E+03