C++ 位域操作 置0置1

bitset<8> bp;unsigned char up = 0;cout << bp << endl;cout << (unsigned)up << endl;bp.set(3);up = up | (1UL<<3);cout << bp << endl;cout << (unsigned)up << endl;bp.reset(3);up = up & ~(1UL<<3);cout << bp << endl;cout << (unsigned)up << endl;