5.55 Binary constants using the 0b prefix
Integer constants can be written as binary constants, consisting of a sequence of 0 and 1 digits, prefixed by 0b or 0B. This is particularly useful in environments that operate a lot on the bit-level (like microcontrollers).
The following statements are identical:
i = 42; i = 0x2a; i = 052; i = 0b101010;
The type of these constants follows the same rules as for octal or hexadecimal integer constants, so suffixes like L or UL can be applied.