char c = 'C'; for (int i = 0; i < 8; ++i) { // extract the i-th bit int b = ((c & 1<<i) >> i); // b will be 1 if i-th bit is set,0 otherwise // do whatever you want with b }
你可以优化它(如评论中所建议)：
int b = ((c >> i) & 1);
