程序代码：

#include<iostream>
#include<memory>
#include<string>
#include<vector>

using namespace std;

class Strblob
{
public:
    typedef vector<string>::size_type size_type;
    Strblob();
    Strblob(vector<string> a);
    void printfff()
    {
        for (auto a : *data)
        {
            cout << a << endl;
        }
    }
private:
    shared_ptr <vector<string>> data;
};
Strblob::Strblob() :data(make_shared<vector<string>>){}
Strblob::Strblob(vector<string>a): data(make_shared<vector<string>>(a)){}

int main()
{
    Strblob a = { { "a", "b", "c" } };
    Strblob b = a;
    b.printfff();
    getchar();
}