2-3 person.cpp

这是一个还算不错的程序

#include<iostream.h>
#include<string.h>
class person
{
protected:
	char *name;
int age;
public:
	person(char *name1,int age);
		~person();
	void show()
	{
		cout<<"name:"<<name<<' '<<"age:"<<age<<endl;
	}
};
person::person(char *name1,int age1)
{
	name=new char[strlen(name1)+1];
	strcpy(name,name1);
	age=age1;
}
class student:public person
{
private:
	char *sno;
public:
	student(char*sno1,char *name1,int age1):person(name1,age1)
	{
	
		sno=new char[strlen(sno1)+1];
		strcpy(sno,sno1);
	}
	~student();
	void show()
	{
		cout<<"name:"<<name<<' '<<"sno:"<<' '<<sno<<' '<<"age:"<<age<<endl;
	}
};
class teacher:public person
{
private:
	int zydata;
public:
	teacher(char *name1,int age1,int zydata1):person(name1,age1)
	{
		zydata=zydata1;
	}
	~teacher();
	void show()
	{
		cout<<"name:"<<name<<' '<<"zydata:"<<zydata<<' '<<"age:"<<age<<endl;
	}
};
person::~person()
{
	delete []name;
}
student ::~student()
{
	delete []name;
	delete []sno;
}
teacher ::~teacher()
{
	delete []name;
}
void main()
{
	person person1("liuhong",20);
	person1.show();
	student stu1("1511001","limin",20);
	stu1.show();
	teacher tea1("wasei",21,20);
	tea1.show();
}