*Numeric literal* has the form *xx*`E`

*syy*, 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.