How do you write binary literal constants in C?
 

In C, to write a hexadecimal literal constant, you prefix the figure with 0x, e.g. 0xffe0119f. To write an octal literal, you prefix it with 0, e.g. 0777. So how do you write a literal in binary?

ansi c does not support binary constants, you'll have to write your numbers in hex, octal or decimal

What a bummer!

if its a real big problem then write something with sed/tr/perl that replaces 0b(binary number) with 0x(hex equivelent) in your source file and write a makefile that runs this before compiling the source. but as you can convert bin/hex bin/octal by inspection its not really worth it.

Converting from binary to hex is really easy, though. Groups of four binary digits represent one hex digit. Probably the reason that binary literals aren't included; Real C Programmers know how to think in Hex anyway ;)

Check out this for more explanation.

I shall report for remedial spanking and beginners' introduction to number bases first thing in the morning, I promise. ;)

Has my licence to hack been revoked?