Numeric literal has the form xxEsyy, where xx
is a real number with optional decimal point, s is the sign +
or -, yy is an integer decimal exponent. The letter E
is case insensitive and can be coded as e.
Examples
123 3.14159 56.E+5 .78 123.456e-7
Numeric literals are used to represent numeric quantities. They have obvious fixed meaning.