How to represent a binary number in C51?

The 'C' language does not have a notation for binary numbers.
Surprising, disappointing - but true! :-(

That's just 'C' for you.

http://www.keil.com/forum/docs/thread1064.asp

The 'C' language does not have a notation for binary numbers.
Surprising, disappointing - but true! :-(

That's just 'C' for you.

http://www.keil.com/forum/docs/thread1064.asp

Thank you very much! Now I understand it.
(I'm a beginner for 8051 and C51).
Hoang Kong Kong.

may be u can translate the .c into .asm first
and than u can make a change on it. :)

Best Regards,
Andy Mario

"I'm a beginner for 8051 and C51"

Note that this has nothing specifically to do with the 8051 or C51 - it is plain, standard, 'C'

Well, may I suggest a little hint? (=

You see, some C compilers have binary notation (like, 0B, 0Bx etc). But pure ANSI C does not. Anyway, if you set and read about that language so have found one magic word called "MACRO". Okay, it's not easy to create such macro on-the-fly if you are not familar with C and binary/octal/decimal formats but... Here you have got it:

#define bin(a) ((( (a/10000000*128) + \
(((a/1000000)&1)*64) + \
(((a/100000)&1)*32) + \
(((a/10000)&1)*16) + \
(((a/1000)&1)*8) + \
(((a/100)&1)*4) + \
(((a/10)&1)*2) + \
(a&1)) * (a/10000000)) + \
(( ((a/262144)*64) + \
(((a/32768)&1)*32) + \
(((a/4096)&1)*16) + \
(((a/512)&1)*8) + \
(((a/64)&1)*4) + \
(((a/8)&1)*2) + \
(a&1)) * (1-(a/10000000))))

Well, it's hard to imagine what does it do (=
But just put these lines above your code and use something like:

unsigned char b1, b2;

b1 = bin(10101010); // 0xAA
b2 = bin(01010101); // 0x55

Note: I do not know, does it work in Keil C or not; at least, in pure ANSI C it does work correctly.

Good days!