c++读取整个文件

#include <stdlib.h>
#include <iostream>
#include <string>
#include<vector>
#include<fstream>
#include <sstream>
using namespace std;
int main(){
    

    ifstream myfile("D:\\站点.txt");
    ofstream out("D:\\out.txt");
    
    std::stringstream buffer;  
    buffer << myfile.rdbuf();  
    std::string re(buffer.str());  //re是从站点读取数据
    
    

    string ans="123";
    
    cout<<ans<<endl;
    out<<ans; 
    
return 0;    
}