Numbers

A number is either an integer or a floating-point number. A decimal integer is a sequence of decimal digits with an optional sign preceding it.

An integer can be in the radix notation, with a base other than 10. In general, an integer in the radix notation takes the form base'digits, where base is a decimal integer, and digits is a sequence of digits. If the base is zero, then the notation represents the code of the character that follows the single quotation mark. The notation ``0b'' begins a binary integer; ``0o'' begins an octal integer; and ``0x'' begins a decimal integer.