PS5Q10 cs 111

#include <iostream>
#include <fstream> // ifstream, open, eof, close
using namespace std;

int main()
{

    ifstream data_store;
    string line, filename;
    int x = 1;
   cout << "Enter filename\n";
   cin >> filename;

   data_store.open(filename.c_str());

    if (!data_store)
    {
        cout << "File not found" << endl;
        return 0;
    }
    while (!data_store.eof())
    {

        getline(data_store, line);
        cout << x << ": " << line << endl;
        x ++;
    }
    //step 4
    data_store.close();


    return 0;
}