7、单继承构造函数

//构造函数
#include <iostream.h>

#include <string.h>

class A
{
private:
    int x, y;

public:

    A(int a, int b):x(a), y(b){cout<<"构造函数"<<endl;}
    A(const A & P):x(P.x),y(P.y) {cout<<"复制构造函数"<<endl;}

    int get_x(){return x;}
    int get_y(){return y;}
};


class B:public A
{
private:
    int z;

public:
    B(int a, int b, int c):A(a, b), z(c){cout<<"构造函数被调用"<<get_x()<<get_y()<<endl;}
    B(const A &C,int r):A(C),z(r){cout<<"复制构造函数B被调用:"<<get_x()<<" "<<get_y()<<endl;}
};


int main(void)
{
   A p1(1,1);
   B(p1,2);

   return 0;
}