2.4.2 Integer Literals

# 2.4.2 Integer Literals

Visual Studio .NET 2003

Integer literals can be decimal (base 10), hexadecimal (base 16), or octal (base 8). A decimal integer literal is a string of decimal digits (0-9). A hexadecimal literal is &H followed by a string of hexadecimal digits (0-9, A-F). An octal literal is &O followed by a string of octal digits (0-7). Decimal literals directly represent the decimal value of the integral literal, whereas octal and hexadecimal literals represent the binary value of the integer literal (thus, `&H8000S` is –32768, not an overflow error).

The type of a literal is determined by its value or by the following type character. If no type character is specified, values in the range of the Integer type are typed as Integer; values outside the range for Integer are typed as Long. If an integer literal's type is of insufficient size to hold the integer literal, a compile-time error results.

```IntegerLiteral ::= IntegralLiteralValue [ IntegralTypeCharacter ]
IntegralLiteralValue ::= IntLiteral | HexLiteral | OctalLiteral
IntegralTypeCharacter ::=
ShortCharacter |
IntegerCharacter |
LongCharacter |
IntegerTypeCharacter |
LongTypeCharacter
ShortCharacter ::= S
IntegerCharacter ::= I
LongCharacter ::= L
IntLiteral ::= Digit+
HexLiteral ::= & H HexDigit+
OctalLiteral ::= & O OctalDigit+
Digit ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
HexDigit ::=
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F
OctalDigit ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7
```