#include <iostream>

using namespace std;

int main()
{
    int n = 10;
    cout << "~10 = " << ~n << endl; // -11 : ~ 位非运算符: 二进制取反: 0000 1010 => 1111 0101 => -11
    n = -9;
    cout << "~(-9) = " << ~n << endl; // 8 : ~ 位非运算符: 二进制取反: 1000 1001 => 0111 0110 => 8

    return 0;
}