沒(méi)有對(duì)C語(yǔ)言中位的理解，你一定不會(huì)用std::bitset，如果理解里C中的位操作，就真心不必再使用std::bitset了

#include "iostream"
#include <iomanip>

void printBits(unsigned int value)
{
    constexpr int size = 8 * sizeof(unsigned);
    constexpr int mask = (1<<(size - 1));

    std::cout << std::setw(2);
    for(int i = 1;i <= size;++i)
    {
        std::cout << ((mask & value) ? '1' : '0');
        value <<= 1;
        if(i%8 == 0)
            std::cout <<' ';
    }
}

#define PRINT1(a) std::cout << std::setw(8) << #a" ="; \
        printBits(a); \
        std::cout << std::endl;


int main(int,char**)
{
    unsigned int a = 0xff;
    unsigned int b = 3;
    PRINT1(a);
    PRINT1(b);
    PRINT1(a&b);
    PRINT1(a|b);
    PRINT1(a^b);
    PRINT1(a&~b);
    PRINT1(a^=b);
    PRINT1(a^=b);
    return 0;
}

上面的程序的輸出如下：

view.png