Numeric constants

A numeric constant consists of numeric and special characters, with no intervening spaces, that conform to the following rules:

• Integer -- The characters 0 - 9 without intervening spaces comprise a positive integer.
• Decimal -- A decimal point may be placed before, after, or within the numeric characters.
• Sign -- The first character of a number may be a plus or minus sign.
• Scientific notation -- A number may be suffixed by the letter E, an optional plus (default) or minus sign, and an integer.

The following table shows the acceptable formats for entering numbers.