Introduction_bit_bit

#include <stdio.h>

int main(){

    int a = 3; // 0...0 0011
    int b = 5; // 0...0 0101
    int c = a & b; // 0...0 0001
    int d = a | b; // 0...0 0111
    int e = ~a; // 1...1 1100
    int f = a ^ b; // 0...0 0110

    int g = a << 3; // 等同乘 2^3
    printf("%d", g);
}

/*

  +  -
+ ++ +-

- -+ --

     000000000000000000101
                    1


false & false = 0
false & true = 0
true & false = 0
true & true = 1

*/