[Tutor] how to read one bit of a byte

Alan Gauld alan.gauld at btinternet.com
Wed Feb 21 21:59:18 CET 2007

"Kent Johnson" <kent37 at tds.net> wrote 
> This is also a good application of bitwise operations.
> a & 128 will be 128 if the high bit in a is set, 0 if it is not.

Only for an 8 bit integer! Most integers nowadays are 
32 bit so you need to use 0x80000000 to get the msb!

Alan G.

More information about the Tutor mailing list