#include <string>
#include<iostream>
#include<vector>
using namespace std;
class A
{
private:int x,y;
public:A(int x=0,int y=0)
{
this->x=x;
this->y=y;
}
void fun()
{
cout<<x<<","<<y<<endl;
}
};
class B
{
private:vector<A *> objvec;
public:B(){}
void add(A * t)
{
objvec.push_back(t);
}
void show()
{
vector<A *>::iterator ivec;
for(ivec=objvec.begin();ivec<objvec.end();ivec++)
}
~B()
{ vector<A *>::iterator ivec;
for(ivec=objvec.begin();ivec<objvec.end();ivec++)
delete *ivec;
}
};
int main (void)
A *pa1=new A(1,2);
A *pa2=new A(3,4);
A *pa3=new A(5,6);
B *pb=new B();
pb->add(pa1);
pb->add(pa2);
pb->add(pa3);
pb->show();
delete pa1;
delete pa2;
delete pa3;*/
B *pb=new B();
pb->add(new A(1,2));
pb->add(new A(3,4));
pb->add(new A(5,6));
pb->show();
#include<iostream>
#include<vector>
using namespace std;
class A
{
private:int x,y;
public:A(int x=0,int y=0)
{
this->x=x;
this->y=y;
}
void fun()
{
cout<<x<<","<<y<<endl;
}
};
class B
{
private:vector<A *> objvec;
public:B(){}
void add(A * t)
{
objvec.push_back(t);
}
void show()
{
vector<A *>::iterator ivec;
for(ivec=objvec.begin();ivec<objvec.end();ivec++)
(* *ivec).fun();//ivec的类型是A**,可以调用类A的公共方法fun();
//cout<<* ivec<<endl;如果是输出*ivec的话,不会出错,但是会输出动态数组每个元素的地址。
~B()
{ vector<A *>::iterator ivec;
for(ivec=objvec.begin();ivec<objvec.end();ivec++)
delete *ivec;
}
};
int main (void)
{
//这段客户端的实现与下面的没有太多的区别,但是如果用下一段的代码,类B就必须要有一个析构函数来delete指针。
A *pa1=new A(1,2);
A *pa2=new A(3,4);
A *pa3=new A(5,6);
B *pb=new B();
pb->add(pa1);
pb->add(pa2);
pb->add(pa3);
pb->show();
delete pa1;
delete pa2;
delete pa3;*/
B *pb=new B();
pb->add(new A(1,2));
pb->add(new A(3,4));
pb->add(new A(5,6));
pb->show();
}
总结:这篇博客和上一篇实现的功能相同,都是在客户端一条调用实现多条输出,但是实现的过程却有很大的差异,
这次主要用了动态数组,把元素依次存进数组中,再把数组元素输出就可以了。当然,每次不可忽略的小细节,记住delete。