.定义一个CPU类,包含等级(rank)、频率(frequency)、电压(voltage)等属性,有两个公有成员函数run、stop。其中,rank为枚举类型CPU_Rank,定义为enum CPU_Rank{P1=1,P2,P3,P4,P5,P6,P7},frequency为单位是MHz的整型数,voltage为浮点型的电压值。观察构造函数和析构函数的调用顺序.
#include <iostream>
using namespace std;
enum CPU_Rank{P1=1,P2,P3,P4,P5,P6,P7
};
class CPU
{
	public:
		CPU(CPU_Rank newrank=P1,int newfrequency=0,float newvoltage=0.0)
		:rank(newrank),frequency(newfrequency),voltage(newvoltage)
		{
			cout<<"成功调用构造函数"<<endl;
			cout<<"等级:"<<rank<<endl;
			cout<<"频率:"<<frequency<<endl;
			cout<<"电压:" <<voltage<<endl;
		}
		void run();
		void stop();
		~CPU(){
			cout<<"成功调用析构函数"<<endl;
		}
	private:
		CPU_Rank rank;	
		int frequency;
		float voltage; 
};
inline void CPU::run()
{
	cout<<"cpu运行"<<endl;
}
inline void CPU::stop()
{
	cout<<"cpu停止"<<endl;
}
int main()
{
	CPU cpu(P3,60,220);
	cpu.run();
	cpu.stop();
	return 0;
}

原文:https://www.cnblogs.com/zmachine/p/12232436.html