An integer is used to represent a signed or unsigned whole value. A plus sign (+) or a minus sign (–) immediately followed by an unsigned integer with no intervening space is always taken as a sign, and not as an operator.

An unsigned integer represents an unsigned whole value.

Integers and unsigned integers are specified in the following manner:

<integer>

──┬─────┬─<unsigned integer>───────────────────────────────────────────┤
  ├─ + ─┤
  └─ - ─┘

<unsigned integer>

  ┌◄────────┐
──┴─<digit>─┴──────────────────────────────────────────────────────────┤

Examples

The following examples illustrate signed and unsigned integers:

0
37
+511
-123456