Converting signed binary string in two's complement to int?

Question

I have a binary string as follows:

String bin = \"1101\";

and I want my int\'s value to be -3 instead of 13

Answer 1

Use if (i >= k) i -= 2 * k; Where k is the smallest positive number your scheme cannot represent. (8 in this case, because 0111 is 7 and 1000 would be negative.)

13 is greater than 8, so you'd subtract 16 from 13, giving -3.