第13章 类继承

一个普通的类继承，包括构造函数传对象引用和参数列表初始化
#ifndef TABLETENN1_H_
#define TABLETENN1_H_
#include<string>
using namespace std;
class TableTennisPlayer
{
private:
    string firstname;
    string lastname;
    bool hasTable;
public:
    TableTennisPlayer(const string &fn="none",const string &ln="none",bool ht=false);
    void Name()const;
    bool HasTable()const
    {
        return hasTable;
    }
    void ResetTable(bool v)
    {
        hasTable=v;
    }
};
class RatedPlayer:public TableTennisPlayer
{
private:
    int rating;
public:
    RatedPlayer(int r=0,const string &fn="none",const string &ln="none",bool ht=false);
    RatedPlayer(int r,const TableTennisPlayer &tp);
    int Rating()const
    { return rating;}
    void ResetRating(int r)
    { rating=r;}
};
#endif

#include<iostream>
#include"tabtenn1.h"
using namespace std;
TableTennisPlayer::TableTennisPlayer(const string &fn,const string &ln,bool ht)
{
    firstname=fn;
    lastname=ln;
    hasTable=ht;
}
void TableTennisPlayer::Name()const
{
    cout<<lastname<<", "<<firstname;
}
RatedPlayer::RatedPlayer(int r,const string &fn,const string &ln,bool ht)
{
    TableTennisPlayer(fn,ln,ht);
    rating=r;
}
RatedPlayer::RatedPlayer(int r, const TableTennisPlayer &tp):TableTennisPlayer(tp)
{
    rating=r;
}

#include<iostream>
#include"tabtenn1.h"
using namespace std;
int main()
{
    TableTennisPlayer player1("Tara","Boomdea",false);
    RatedPlayer rplayer1(1140,"Maloory","Duck",true);
    rplayer1.Name();
    if(rplayer1.HasTable())
        cout<<" has a table!"<<endl;
    else
        cout<<" hasn't a table!"<<endl;
    player1.Name();
    if(player1.HasTable())
        cout<<" has a table!"<<endl;
    else
        cout<<" hasn't a table!"<<endl;
    cout<<"Name:";
    rplayer1.Name();
    cout<<";Rating: "<<rplayer1.Rating();

    RatedPlayer rplayer2(1212,player1);
    cout<<"Name: ";
    rplayer2.Name();
    cout<<";Rating: "<<rplayer2.Rating()<<endl;

    return 0;
}