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Literal Values >
Number Literals

## Number literals

Numbers always start with a numeral digit. They can be written in
hexadecimal, octal or binary when they start with one of the special
prefixes:

0x hexadecimal

0c octal

0b binary

Numbers are not case-sensitive. Spaces are allowed after a
significant digit or a prefix, but a number cannot span more than one
line.

Floating point numbers contain a dot or an exponent part or both.
They cannot end with a dot. The exponent part is introduced by a "e"
followed by an optional sign and one or more digits.

Examples:

33

0x3E B4 98

0.0

000001234

5E-21

1.760 012 e3

Rationale:
since the dot has other meanings in dodo, a floating point number needs
digits after the dot. The traditional "0" prefix for octal numbers is
ambiguous so dodo uses an explicit prefix letter. Allowing spaces in
number literals helps readability.

^ 2.4. Literal Values

v 2.4.2. Text String Literals