4.7 Numbers

A decimal number is any sequence of decimal digits, not beginning with ‘0’.

An octal number is ‘0’ followed by any number of octal digits (‘0’ through ‘7’), for example: 0340.

A hex number is ‘0x’ or ‘0X’ followed by any number of hex digits (‘0’ through ‘9’ and ‘a’ through ‘f’ or ‘A’ through ‘F’), for example: 0x3ef1.