static void listStudents(){
    cout << endl << "List students" << endl<< endl;
    ifstream textfile;
    string line;
    string unused = "";
    textfile.open("students.txt");
    if(textfile.is_open()){
        int count = 0;
        for(int i = 0 , j = 0; !textfile.eof(); i++){
                if(i == j){
                    count++;
                    textfile >> line;
                    cout << count << ": " << line;
                    textfile >> line;
                    cout << " " << line << endl;
                    j+=11;
                }else{
                    textfile >> unused;
                    unused = "";
                }
        }
    }else{
        cout << "You don't have any students!" << endl;
    }
    textfile.close();
    cout << endl << endl;
    main();
}

!textfile.eof()