4.1

#include "stdafx.h"
#include <iostream>
#include <iostream>
#include <cmath>
#include <fstream>

using namespace std;

int main()
{
   setlocale(LC_ALL, "russian");

   fstream F;
   F.open("kpop.txt",ios::out);
   int a;
   for (int i=0; i<10; i++){
    cin >> a;
    F << " " << a;
   }
   F.close();

   int sum, X;
   sum=0;
   F.open("kpop.txt",ios::in);
   while (!F.eof()){
    F >> X;
    sum=sum+X;
   }
    cout << sum;
}