练习21

#include <iostream>

using namespace std;

enum Core { Single, Dual, Quad };

enum Words { Bit32, Bit64 };

enum HyperThread { Support, NotSupport };

class CPU {

public:
CPU(unsigned frequence, Core type, Words length, HyperThread mode)
: frequence (frequence), CoreType (type), WordLen (length), mode(mode) { }
void show();

private:
unsigned frequence: 32;
Core CoreType: 3;
Words WordLen: 2;
HyperThread mode: 2;

};

void CPU::show() {
cout << " Frequence:    " << frequence << endl;
cout << " Core:     ";
switch ((unsigned)CoreType) {
case Single:  cout << " Single-Core"; break;
case Dual:
cout << " Dual-Core"; break;
case Quad:
cout << " Quad-Core"; break;
}
cout << endl;
cout << " Words:     ";
switch ((unsigned)WordLen) {
case Bit32:
cout << "32-bits len"; break;
case Bit64:
cout << "64-bits len"; break;
}
cout << endl;
cout << " HyperThread:     ";
switch ((unsigned)mode) {
case Support:
cout << "Support Hyper-Thread"; break;
case NotSupport:
cout << "Not Support Hyper-Thread"; break;
}
cout << endl;

}

int main() {
CPU c(3000000000, Quad, Bit64,Support);
cout << "Size of Class CPU: " << sizeof(CPU) << endl;
c.show();
return 0;

}