9_80.cpp

里面有各种各样的程序例子可以供初学者使用而且非常有趣欢迎刚兴趣的读者前来下载

#include<iostream.h>
#include<string.h>
class father
{
protected:
	char* fname;
	char* sname;
	int age;
public:
	father()
	{cout<<"father默认构造函数调用!"<<endl;fname=NULL;sname=NULL;}
	father(char *fn,char *sn,int a)
	{
		cout<<"father构造函数调用!"<<endl;
		fname=new char[strlen(fn)+1];
		strcpy(fname,fn);
		sname=new char[strlen(sn)+1];
		strcpy(sname,sn);
		age=a;
	}
	~father()
	{
		cout<<"father析构函数调用!"<<endl;
		delete fname;
		delete sname;
	}
	char *getfname(){return fname;}
	void show(){cout<<fname<<sname<<"  年龄:"<<age;}
};
class mother
{
protected:
	char* fname;
	char* sname;
	int age;
public:
	mother()
	{cout<<"mother默认构造函数调用!"<<endl;fname=NULL;sname=NULL;}
	mother(char *fn,char *sn,int a)
	{
		cout<<"mother构造函数调用!"<<endl;
		fname=new char[strlen(fn)+1];
		strcpy(fname,fn);
        sname=new char[strlen(sn)+1];
		strcpy(sname,sn);
		age=a;
	}
	~mother()
	{
		cout<<"mother析构函数调用!"<<endl;
		delete fname;
		delete sname;
	}
	char *getfname(){return fname;}  //此句可省略
	void show(){cout<<fname<<sname<<"  年龄:"<<age;}
};
class child:public mother,public father
{
private:
	father* myfather;
	mother* mymother;
public:
	child(){cout<<"child构造函数调用!"<<endl;}
	child(father& fa,mother &mo,char *na,int a)
		:myfather(&fa),mymother(&mo)
	{
		cout<<"child构造函数调用!"<<endl;
      //不能省略mother::否则出现二义性
		mother::fname=new char[strlen(fa.getfname())+1];  
	//如子随母姓，则改为strcpy(mother::fname,mo.getfname());
		strcpy(mother::fname,fa.getfname());
        mother::sname=new char[strlen(na)+1];
		strcpy(mother::sname,na);
		mother::age=a;  //不能写成age=a; 
	}
	~child(){cout<<"child析构函数调用!"<<endl;}
	void show()
	{
		cout<<"  姓名:"; mother::show();
		cout<<endl;
		cout<<"父亲:"; myfather->show();
		cout<<endl;
		cout<<"母亲:"; mymother->show();
		cout<<endl;
	}
};
void main()
{
	father fa1("欧阳","东海",50),fa2("张","伟大",40);
	mother mo1("李","超丽",47),mo2("许","英",35);
	child ch1(fa1,mo1,"智超",23),ch2(fa2,mo2,"宁",10);
	cout<<"输出结果:"<<endl;
	ch1.show();
	ch2.show();
}