Shared_ptr简单实现

/*
    @author:wcx
    @task:shared_ptr实现
*/
#include
using namespace std;
namespace P{
    template
    class Shared_ptr{
    public:
        Shared_ptr(T *da):s(da),p_cnt(new int(1)){
//            s=da;
//            p_cnt=new int(1);
//            cout<<1<(){
            return s;
        }
        T& operator *(){
            return *s;
        }
        int get_cnt(){
            if(p_cnt==NULL) return 0;
            else return (*p_cnt);
        }
    protected:
        T *s;
        int *p_cnt;
    };
}
int main(){
    using namespace P;
    Shared_ptr now(new int(10));
    Shared_ptr a(now);
    cout< a(now);

}