Integer Constants

Integers can be expressed in several bases:

• Decimal. Decimal integers begin with a non-zero digit followed by zero or more decimal digits (0–9).

• Binary. Binary integers begin with “0b” or “0B” followed by zero or more binary digits (0, 1).

• Octal. Octal integers begin with zero (0) followed by zero or more octal digits (0–7).

• Hexadecimal. Hexadecimal integers begin with “0x” or “0X” followed by one or more hexadecimal digits (0–9, A–F). Hexadecimal digits can be either uppercase or lowercase.