15/2

#include <iostream>
#include <string>
#include <fstream>


using namespace std;

int main()
{

    int a , b , c;
    cout << "a:";
    cin >> a;
    cout << "b:";
    cin >> b;
    cout << "c:";
    cin >> c;


    int i = 0;
    string text, word;

    ifstream al("tek.txt",ios::binary);
    while (getline(al,text)) {

        ++i;

        if (i == c) {


            string str2 = text.substr(a, b);
            cout << str2;
        }
        if (text.size() < c) {

            cout << "a";
       }



     }

    if (c > i) {
        cout << "sütün bulunamadı";

    }





    al.close();
    return 0;

}