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c++-多态的练习

2019-12-22 16:01:24来源：博客园 阅读 ()

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c++-多态的练习

多态的几个小练习

练习一

#include <iostream>
#include <string>
using namespace std;


class Fu
{
public:
    Fu(string name)
    {
        this->name = name;
    }
    virtual void func()
    {
        cout << "调用了Fu的函数"<<endl;
        cout<<"Fu " << name <<" func()"<< endl;

    }
    string name;
};
class Zi :public Fu
{
    public:
    Zi(string name):Fu(name)
    {
    }
    void func()
    {
        cout << "调用了Zi的函数" << endl;
        cout << "Zi " << name << " func()"<< endl;
    }
    
};
class Zi2 :public Fu
{
    public:
    Zi2(string name) : Fu(name)
    {
        

    }
    void func()
    {
        cout << "调用了Zi2的函数" << endl;
        cout << "Zi2 "<< name << " func()" << endl;
    }
};
class Sun :public Zi
{
    public:
    Sun(string name) : Zi(name)
    {
    }
    void func()
    {
        cout << "调用了Sun的函数" << endl;
        cout << "Sun " << name << " func()"<<endl;
    }

};
void fun(Fu &f)
{
    f.func();//在此处应该发生多态

}
int main()
{
    Fu f("FFFF");
    Zi z("ZZZZ");
    Zi2 z2("TTTT");
    Sun s("SSSS");
    fun(f);
    fun(z);
    fun(z2);
    fun(s);
    return 0;
}

练习二

#include <iostream>
#include <string>
using namespace std;


class Fu
{
public:
    Fu(string name)
    {
        this->name = name;
    }
    virtual void func()
    {
        cout << "调用了Fu的函数"<<endl;
        cout<<"Fu " << name <<" func()"<< endl;

    }
    string name;
};
class Zi :public Fu
{
    public:
    Zi(string name):Fu(name)
    {
    }
    void func()
    {
        cout << "调用了Zi的函数" << endl;
        cout << "Zi " << name << " func()"<< endl;
    }
    
};
class Zi2 :public Fu
{
    public:
    Zi2(string name) : Fu(name)
    {
        

    }
    void func()
    {
        cout << "调用了Zi2的函数" << endl;
        cout << "Zi2 "<< name << " func()" << endl;
    }
};
class Sun :public Zi
{
    public:
    Sun(string name) : Zi(name)
    {
    }
    void func()
    {
        cout << "调用了Sun的函数" << endl;
        cout << "Sun " << name << " func()"<<endl;
    }

};
void fun(Fu &f)
{
    f.func();//在此处应该发生多态

}
int main()
{
    Fu f("FFFF");
    Zi z("ZZZZ");
    Zi2 z2("TTTT");
    Sun s("SSSS");
    fun(f);
    fun(z);
    fun(z2);
    fun(s);
    return 0;
}

练习三

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
using namespace std;

//把大象关进冰箱
//冰箱类
class IceBox
{
protected:
    int size;//冰箱的容积
public:
    IceBox(int size)
    {
        this->size = size;
    }
    virtual int getSize()
    {
        return this->size;
    }
};

class Animal
{
protected:
    int size;
public:
    Animal(int size)
    {
        this->size = size;
    }
    virtual int getSize()
    {
        return this->size;
    }

};
//大象类
class Elephent:public Animal
{
private:
    string name;
public:
    Elephent(int size, string name) :Animal(size)
    {
        this->name = name;
    }
    virtual int getESize()
    {
        return this->size;
    }
    string getName()
    {
        return this->name;
    }
};

class Geli:public IceBox
{
private:
    string name;
public:
    
    Geli(int size , string name) :IceBox(size)
    {
        this->name = name;
    }
    virtual int getSize()
    {
        return this->size;
    }
    string getName()
    {
        return this->name;
    }
};

void putEleIntoBox(IceBox *ib, Animal *an)
{
    if (ib->getSize() > an->getSize())
    {
        cout << "把动物装进去了" << endl;
    }
    else
    {
        cout << "动物卡住了" << endl;
    }
}
int main()
{
    
    IceBox ib(100);
    Animal an(200);


    putEleIntoBox(&ib, &an);

    Elephent *ep = new Elephent(200, "非洲象");
    Geli *DongMZ = new Geli(300, "geli");

    putEleIntoBox(DongMZ, ep);
    system("pause");
    return 0;
}

练习四

#define _CRT_SECURE_NO_WARNINGS
#include"iostream"
using namespace std;

class Programmer
{
public:
    virtual int salaryPerMonth()=0;
    virtual char * getName()=0;
};

class CppProgrammer :public Programmer
{
public:
    virtual int salaryPerMonth()
    {
        return 20000;
    }
    virtual char *  getName()
    {
        return "CppProgrammer";
    }

};

class PhpProgrammer :public Programmer
{
public:
    virtual int salaryPerMonth()
    {
        return 10000;
    }
    virtual char *  getName()
    {
        return "PhpProgrammer";
    }

};

class JavaProgrammer :public Programmer
{
public:
    virtual int salaryPerMonth()
    {

        return 15000;
    }
    virtual char *  getName()
    {
        return "JavaProgrammer";
    }
};

class Girl
{
public:
    virtual int Beauty()
    {

    }
    virtual char *  getName() {

    }

};

class BaiFuMei : public Girl
{
public:
    virtual int Beauty()
    {
        return 19999;
    }
    virtual char *  getName()
    {
        return "BaiFuMei";
    }


};

class NvDiaoSi : public Girl
{
public:
    virtual int Beauty()
    {
        return 11000;
    }
    virtual char *  getName()
    {
        return "NvDiaoSi";
    }


};

class FengJie : public Girl
{
public:
    virtual int Beauty()
    {
        return 14000;
    }
    virtual char *  getName()
    {
        return "FengJie";
    }

};



void Marry(Programmer &pp, Girl &gg)
{
    if (pp.salaryPerMonth() > gg.Beauty())
    {
        cout << pp.getName() << "\t"<<"will marry   "<<gg.getName() << endl;
    }
    else

    {
        cout << "hey  " << pp.getName() << "  don't make a day dream! you want to marry to  " << gg.getName() <<"??"<< endl;
    }
}

int main()
{
    CppProgrammer cpp;
    PhpProgrammer php;
    JavaProgrammer java;
    BaiFuMei bfm;
    NvDiaoSi nds;
    FengJie fj;
    Marry(cpp, bfm);
    Marry(php, bfm);
    Marry(java, bfm);

    Marry(php, nds);
    Marry(java, bfm);

    
    Marry(java, fj);

    system("pause");
    return 0;
}

练习五

#define _CRT_SECURE_NO_WARNINGS
#include"iostream"
using namespace std;

class Programmer
{
public:
    virtual int salaryPerMonth()=0;
    virtual char * getName()=0;
};

class CppProgrammer :public Programmer
{
public:
    virtual int salaryPerMonth()
    {
        return 20000;
    }
    virtual char *  getName()
    {
        return "CppProgrammer";
    }

};

class PhpProgrammer :public Programmer
{
public:
    virtual int salaryPerMonth()
    {
        return 10000;
    }
    virtual char *  getName()
    {
        return "PhpProgrammer";
    }

};

class JavaProgrammer :public Programmer
{
public:
    virtual int salaryPerMonth()
    {

        return 15000;
    }
    virtual char *  getName()
    {
        return "JavaProgrammer";
    }
};

class Girl
{
public:
    virtual int Beauty()
    {

    }
    virtual char *  getName() {

    }

};

class BaiFuMei : public Girl
{
public:
    virtual int Beauty()
    {
        return 19999;
    }
    virtual char *  getName()
    {
        return "BaiFuMei";
    }


};

class NvDiaoSi : public Girl
{
public:
    virtual int Beauty()
    {
        return 11000;
    }
    virtual char *  getName()
    {
        return "NvDiaoSi";
    }


};

class FengJie : public Girl
{
public:
    virtual int Beauty()
    {
        return 14000;
    }
    virtual char *  getName()
    {
        return "FengJie";
    }

};



void Marry(Programmer &pp, Girl &gg)
{
    if (pp.salaryPerMonth() > gg.Beauty())
    {
        cout << pp.getName() << "\t"<<"will marry   "<<gg.getName() << endl;
    }
    else

    {
        cout << "hey  " << pp.getName() << "  don't make a day dream! you want to marry to  " << gg.getName() <<"??"<< endl;
    }
}

int main()
{
    CppProgrammer cpp;
    PhpProgrammer php;
    JavaProgrammer java;
    BaiFuMei bfm;
    NvDiaoSi nds;
    FengJie fj;
    Marry(cpp, bfm);
    Marry(php, bfm);
    Marry(java, bfm);

    Marry(php, nds);
    Marry(java, bfm);

    
    Marry(java, fj);

    system("pause");
    return 0;
}

练习六

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>


using namespace std;

//

class  Girl
{
public:

    int  fangyu()
    {
        return 10;
    }

};


class Boy
{
public:
    virtual int fight()
    {
        return 5;
    }

};

class higBoy:public Boy
{
public:
    virtual int fight()
    {
        return 10;
    }

};

class bugBoy :public Boy
{
public:
    virtual int fight()
    {
        return 20;
    }

};

//战斗方法
void catchGirl(Boy &bp, Girl &mp)
{
    if (bp.fight() > mp.fangyu()) { //hp->getAd 发生了多态
        cout << "女孩被追到了" << endl;
    }
    else {
        cout << "没追到" << endl;
    }
}


int main(void)
{

    Girl mp;

    Boy b1;
    higBoy b2;
    bugBoy b3;

    catchGirl(b1, mp);
    catchGirl(b2, mp);
    catchGirl(b3, mp);


    // system("pause");
    return 0;
}

练习七

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <cstdlib>

using namespace std;


class Person
{
public:
    Person(char * name,int age)
    {
        this->name = name;
        this->age = age;
    }
    virtual void aryYouOK()
    {
        cout << "name: " << this->name << endl;
        cout << "age: " << this->age << endl;
    }
    string getName()
    {
        return name;
    }
    int getAge()
    {
        return age;
    }
private:
    string name;
    int age;
};

class Teacher : public Person
{
public:
    Teacher(char * name, int age, int wage) :Person(name, age)
    {
        this->wage = wage;
    }
    virtual void aryYouOK()
    {
        Person::aryYouOK();
        cout << "wage:" << this->wage << endl;
    }
private:
    int wage;
};

class Student:public Person
{
public:
    Student(char * name, int age, char * work) :Person(name, age)
    {
        this->work = work;
    }
    virtual void aryYouOK()
    {
        Person::aryYouOK();
        cout << "work:" << this->work << endl;
    }
private:
    string work;
};

void seeHello(Person & p)
{
    p.aryYouOK();
}


int main(void)
{
    Student stu("í??t1·", 18, "?§?°");

    Teacher tea("°×?à",22, 8000);
    
    seeHello(stu);
    cout << endl;
    seeHello(tea);


    cout << endl;
    // system("pause");
    return 0;
}

练习八

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <cstdlib>

using namespace std;


class Person
{
public:
    Person(char * name,int age)
    {
        this->name = name;
        this->age = age;
    }
    virtual void aryYouOK()
    {
        cout << "name: " << this->name << endl;
        cout << "age: " << this->age << endl;
    }
    string getName()
    {
        return name;
    }
    int getAge()
    {
        return age;
    }
private:
    string name;
    int age;
};

class Teacher : public Person
{
public:
    Teacher(char * name, int age, int wage) :Person(name, age)
    {
        this->wage = wage;
    }
    virtual void aryYouOK()
    {
        Person::aryYouOK();
        cout << "wage:" << this->wage << endl;
    }
private:
    int wage;
};

class Student:public Person
{
public:
    Student(char * name, int age, char * work) :Person(name, age)
    {
        this->work = work;
    }
    virtual void aryYouOK()
    {
        Person::aryYouOK();
        cout << "work:" << this->work << endl;
    }
private:
    string work;
};

void seeHello(Person & p)
{
    p.aryYouOK();
}


int main(void)
{
    Student stu("í??t1·", 18, "?§?°");

    Teacher tea("°×?à",22, 8000);
    
    seeHello(stu);
    cout << endl;
    seeHello(tea);


    cout << endl;
    // system("pause");
    return 0;
}

练习九

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <cstdlib>

using namespace std;


class Person
{
public:
    Person(char * name,int age)
    {
        this->name = name;
        this->age = age;
    }
    virtual void aryYouOK()
    {
        cout << "name: " << this->name << endl;
        cout << "age: " << this->age << endl;
    }
    string getName()
    {
        return name;
    }
    int getAge()
    {
        return age;
    }
private:
    string name;
    int age;
};

class Teacher : public Person
{
public:
    Teacher(char * name, int age, int wage) :Person(name, age)
    {
        this->wage = wage;
    }
    virtual void aryYouOK()
    {
        Person::aryYouOK();
        cout << "wage:" << this->wage << endl;
    }
private:
    int wage;
};

class Student:public Person
{
public:
    Student(char * name, int age, char * work) :Person(name, age)
    {
        this->work = work;
    }
    virtual void aryYouOK()
    {
        Person::aryYouOK();
        cout << "work:" << this->work << endl;
    }
private:
    string work;
};

void seeHello(Person & p)
{
    p.aryYouOK();
}


int main(void)
{
    Student stu("í??t1·", 18, "?§?°");

    Teacher tea("°×?à",22, 8000);
    
    seeHello(stu);
    cout << endl;
    seeHello(tea);


    cout << endl;
    // system("pause");
    return 0;
}

原文链接:https://www.cnblogs.com/ygjzs/p/12079018.html
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