MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip

16-Bit C Compiler User’s Guide
2.5 EXPRESSION DIFFERENCES
This section describes the expression differences between plain ANSI C and the C
accepted by the compiler.
2.5.1 Binary Constants
A sequence of binary digits preceded by 0b or 0B (the numeral ‘0’ followed by the letter
‘b’ or ‘B’) is taken to be a binary integer. The binary digits consist of the numerals ‘0’
and ‘1’. For example, the (decimal) number 255 can be written as 0b11111111.
Like other integer constants, a binary constant may be suffixed by the letter ‘u’ or ‘U’,
to specify that it is unsigned. A binary constant may also be suffixed by the letter ‘l’ or
‘L’, to specify that it is long. Similarly, the suffix ‘ll’ or ‘LL’ denotes a long long binary
constant.
DS51284H-page 32 © 2008 Microchip Technology Inc.