#include<iostream>

 #include<vector>

 #include<string>

 #include<fstream>

 using namespace std;

 int main()

 {

     ifstream in("test.txt");

     if (!in)

     {

         cerr << "打开文件失败" << endl;

         exit();

     }

     vector<string> vec;

     string str;

     in >> str;

     while (getline(in, str))

         vec.push_back(str);

     for (auto c : vec)

         cout << c << endl;

     return ;

 }

#include<iostream>

#include<vector>

#include<string>

#include<fstream>

using namespace std;

int main()

{

    ifstream in("test.txt");

    if (!in)

    {

        cerr << "打开文件失败" << endl;

        exit();

    }

    vector<string> vec;

    string str;

    in >> str;

    while (getline(in, str))

        vec.push_back(str);

    for (auto c : vec)

        cout << c << endl;

    return ;

}