Question

#include<iostream>
#include<string.h>

using namespace std;

class Mother 
{
    protected:
        string mname;
    public:
        Mother (string mname1)
            {mname=mname1;}
        string getMName()
            {return mname;}
};

class Father 
{
    protected:
        string fname;
    public:
        Father (string fname1)
            {fname=fname1;}
        string getFName()
            {return fname;}
};

class Child : public Mother, public Father      // MultipleInheritance
{
    private:
        string cname;[enter image description here][1]
    public:
        Child ()
            { 
                cout<<"What is your MOTHER name? : " << endl ;
                cin >> mname;
                cout << "What is your FATHER name? : " << endl;
                cin >> fname; 
                cout <<"What is your YOUR name? : "<< endl ;
                cin >> cname;
            }
        Child (string mname1 , string fname1, string cname1)    
            {mname=mname1; fname=fname1;cname=cname1;}
        string getCName()
            {return cname;}
};

int main ()
{
    Child c1;
    Child c2 ("Amneh","Ahmad","Mohammad");
    cout<<"First  constructor >>> Mother Name : \t"<< c1.getMName()<<"Father Name : "<< c1.getFName()<<"Child Name : " <<c1.getCName()<<endl;
    cout<<"Second constructor >>> Mother Name : \t"<< c2.getMName()<<"Father Name : "<< c2.getFName()<<"Child Name : " <<c2.getCName()<<endl;
}

创建上面显示的类，注意Child类继承自Mother类和Father类。创建一个Child对象。使用show（）函数打印出母亲的父亲和孩子的名字。

这是代码中的错误？我尝试了许多方式，但没有工作。一世需要创建继承自2个类的类..这是我的第一个 stackoverflow中的时间帖子。：）谢谢。 Mohammad El-Musleh

Answer 1

Mother和Father每个只有一个构造函数，并且该构造函数接受一个字符串，因此您必须在Child的构造函数中提供该字符串。

public:
    Child (string name, string mname, string fname)
       :Mother(mnane), Father(fname)
    {
         cname = name;
    }

此外，要求名称的代码必须在构造函数之外（并且最好完全在类之外）

Answer 2

谢谢 James Curran 如果有人想查看最终代码，我希望它可以帮到你。

这是代码的新更新。

#include<iostream>
#include<string.h>

using namespace std;

class Mother 
{
    protected:
        string mname;
    public:
        Mother (string mname1)
            {mname=mname1;}
        string getMName()
            {return mname;}
};

class Father 
{
    protected:
        string fname;
    public:
        Father (string fname1)
            {fname=fname1;}
        string getFName()
            {return fname;}
};

class Child : public Mother, public Father      // MultipleInheritance
{
    private:
        string cname;
    public:
        Child (string mname1 , string fname1, string cname1);
        string getCName();
};

Child :: Child (string mname1, string fname1, string cname1) : Mother(mname1), Father(fname1)
    {cname=cname1;}
string Child :: getCName()
    {return cname;}

void show()     //I use constructor  
{
    Child c2 ("Amneh","Ahmad","Mohammad");
    cout<<"Constructor >>>\n Mother Name : "<< c2.getMName()<<"\n Father Name : "<< c2.getFName()<<"\n Child Name : " <<c2.getCName()<<endl;
}

int main ()
{
    show();
}

C ++ Create Child类继承自Mother类和Father类

2 个答案: