p325.3.cpp

学习VC++的最基础程序

#include<iostream>
using namespace std;
//----------------------
class CAT{
	int* itsAge;
public:
	CAT():itsAge(new int(5)){}
	CAT(const CAT& n){itsAge=new int(5);*itsAge=n.GetAge();}
	~CAT(){delete itsAge;}
	int GetAge() const {return *itsAge;}
	void SetAge(int age){*itsAge=age;}
};
//----------------------
void main(){
	CAT frisky;
	cout<<"frisky's age:"<<frisky.GetAge()<<endl;
	cout<<"Setting frisky to 6...\n";
	frisky.SetAge(6);
	cout<<"Creating boots from frisky\n";
	CAT boots(frisky);
	cout<<"frisky's age:"<<frisky.GetAge()<<endl;
	cout<<"boots's age:"<<boots.GetAge()<<endl;
	cout<<"setting frisky to 7...\n";
	frisky.SetAge(7);
	cout<<"frisky's age:"<<frisky.GetAge()<<endl;
	cout<<"boots'age:"<<boots.GetAge()<<endl;
}