Binary prefixes in C
Author
hi,
does anyone know the binary prefix when it comes to defining one?
For example, for Hexademical representation it is 0x...
for Octal it is 0...
how about binary?
Actually, while b is a valid suffix in assembly language, it''s not in C. There is no way to put in binary numbers in C/C++ code, as far as I know. But if there is, then I''d like to know too 
Some compilers may have provisions for binary constants, but the ANSI standard does not.
Author
about 8 years ago, I think I used %... to represent binary in a Borland compiler but I guess that doesn''t work now.
Surely it's not too difficult to write a little function to let you use binary numbers?
Something like:
int Binary(char* binaryString);
Then you could do something like this:
int aNumber = Binary("01010111");
You could even write a macro do make it easier to use.
#define BINARY(n) Binary(#n)
int aNumber = BINARY(01010111)
And here's a sample function:
Andy.
Edited by - andy maddison on February 2, 2001 4:01:14 PM
Something like:
int Binary(char* binaryString);
Then you could do something like this:
int aNumber = Binary("01010111");
You could even write a macro do make it easier to use.
#define BINARY(n) Binary(#n)
int aNumber = BINARY(01010111)
And here's a sample function:
int Binary(char* binaryString){ char* digit = binaryString+strlen(binaryString); int total = 0; int count = 0; do { total += ((*(--digit)-'0')<<count++); } while(digit != binaryString); return total;} Andy.
Edited by - andy maddison on February 2, 2001 4:01:14 PM
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