How do I print one bit?

Question

Please tell me how do I print a bit, like printf(\"%d\",bit);.

Answer 1

If bit is just an int that contains the value you want in the least significant bit, then:

printf("%d", bit & 0x1);

should do it. The & is doing a binary-AND with a number with only the first significant bit set, so you're removing all the rest of the bits in the integer.