csp2021阅读程序第一题

#include <iostream>
using namespace std;
int main()
{
unsigned short x, y;
cin >> x >> y;
x = (x | x << 2)& 0x33;
cout<<"1   x is  "<<x<<endl;
x = (x | x << 1)& 0x55;
cout<<"2   x is  "<<x<<endl;
y = (y | y << 2)& 0x33;
cout<<"1   y is  "<<x<<endl;
y = (y | y << 1)& 0x55;
cout<<"2   y is  "<<x<<endl;
unsigned short z = x | y << 1;
cout << z << endl;
return 0;
 }

　　

 

解析:

|..............这是个取or运算

<<............这个是右移运算

ox33............这是代表16进制下的数字33