Boost练习程序（智能指针）

#include <iostream>
#include <vector>
#include <string>
#include <boost/shared_ptr.hpp>

class A
{
public:
    A(std::string s){a=s;}
    std::string a;
void print(){std::cout<<a<<'\n';}

};

void main()
{
    boost::shared_ptr<A> p1(new A("2345"));
    boost::shared_ptr<A> p2(new A("dfgds"));
    std::vector< boost::shared_ptr<A> > m;
    std::vector< boost::shared_ptr<A> >::iterator it;

    m.push_back(p1);
    m.push_back(p2);
for (it=m.begin();it!=m.end();it++)
    {
        (*it)->print();
    }

}