Floating-point constants Similar to int constants, floating-point constants can make the code more readable. Floating-point constants are transformed into the values of their expressions when compiling.
n = .005; Floating-point numbers can be represented in scientific notation. 'E' and 'e' both can be used as effective index signs.
Floating-point number Transformation Transformation 10.0 10 2.34E5 2.34 * 10^5 234000 67E-12 67.0 * 10^-12 0.000000000067