位运算（C++）

C++输出十六进制

#include<iostream>
#include<iomanip>
using namespace std;int main()
{int a = 60;int b = 13;int c =  a &b;cout << "a : hex "<<hex << a << endl;cout << "b : hex "<<hex << b << endl;cout << "c : hex "<<hex << c << endl;return 0;
}

运行结果：

exbot@ubuntu:~/wangqinghe/C++/enum$ ./mybyte

a : hex 3c

b : hex d

c : hex c

C++输出二进制：

#include<iostream>
#include<bitset>
using namespace std;
const int num = 8; //输出位数控制
int main()
{int n_max = 42;cout << (bitset<num>)n_max << endl;return 0;
}

运行结果：

exbot@ubuntu:~/wangqinghe/C++/enum$ ./binbyte

00101010

位计算：

#include<iostream>
#include<bitset>
using namespace std;
const int num = 8;int main()
{int a = 60;int b = 13;int c = 0;cout << "a = " << a << endl; cout << "b = " << b << endl;c = a & b;cout << "& AND" << endl;cout << "a : " << (bitset<num>)a << endl;cout << "b : " << (bitset<num>)b << endl;cout << "c : " << (bitset<num>)c << endl;c = a | b;cout << "| OR" << endl;cout << "a : " << (bitset<num>)a << endl;cout << "b : " << (bitset<num>)b << endl;cout << "c : " << (bitset<num>)c << endl;c = a ^ b;cout << "^ XOR" << endl;cout << "a : " << (bitset<num>)a << endl;cout << "b : " << (bitset<num>)b << endl;cout << "c : " << (bitset<num>)c << endl;c = (~a);cout << "~ Reverse" << endl;cout << "a = " << a << endl;cout << "c = " << c << endl;cout << "a : " << (bitset<num>)a << endl;cout << "c : " << (bitset<num>)c << endl;c = a << 2;cout << "<< shift left" << endl;cout << "a = " << a << endl;cout << "c = " << c << endl;cout << "a : " << (bitset<num>)a << endl;cout << "c : " << (bitset<num>)c << endl;c = a >> 2;cout << "<< shift right" << endl;cout << "a = " << a << endl;cout << "c = " << c << endl;cout << "a : " << (bitset<num>)a << endl;cout << "c : " << (bitset<num>)c << endl;return 0;
}