包含子對象的派生類的構造函數

#include<iostream>

#include<string>

using namespace std;

class student

{

public:

student(int num,char ch)

{

n=num;

c=ch;

}

void display();

private:   //protected

int n;

char c;

};

void student::display()

{

cout<<"num:"<<n<<endl;

cout<<"ch:"<<c<<endl;

}

class student1:public student

{

public:

student1(int num,char ch,int num1,char ch1,int no,string str):student(num,ch),mm(num1,ch1)

{

a=no;

b=str;

}

void display1();

void mmshow();

private:

student mm;

int a;

string b;

};

void student1::display1()

{

cout<<"這個學生的數據以下：\n";

display();

cout<<"a:"<<a<<endl;

cout<<"b:"<<b<<endl;

}

void student1::mmshow()

{

cout<<"mm數據以下:\n";

mm.display();

}

int main()

{

student1 nn(55,'m',66,'n',7,"mn");

nn.display1();

nn.mmshow();

return 0;

}