OOP Ass 4 - File I/O

#include <iostream>
#include <fstream>
#include <string>
using namespace std;

int main(){

    string data;
    int age;
    ofstream outfile;
    outfile.open("data.dat");
    cout << "Writing to the file... " << endl;
    cout << "Enter your name: ";
    getline(cin, data);
    outfile << data << endl;
    cout << "Enter your age: ";
    cin >> age;
    outfile << age << endl;
    outfile.close();


    string fdata;
    int fage;
    ifstream infile;
    infile.open("data.dat");
    cout << "\nReading from the file..." << endl;
    getline(infile, fdata);
    infile >> fage;
    cout << fdata << endl;
    cout << fage << endl;
    infile.close();


    infile.open("ok.dat");
    string contents, line;
    infile.open("ok.dat");
    cout << "\nReading from the file..." << endl;
    while(getline(infile, line)) {
        contents += line + '\n';
    }
    cout << "File Contents:" << endl;
    cout << contents;
    infile.close();

    return 0;
}

/* OUTPUT:

Writing to the file...
Enter your name: John Doe
Enter your age: 99

Reading from the file...
John Doe
99

Reading from the file...
File Contents:
----- BEGIN ok.txt -----

Hello World!
Printing entire contents of the file at once.
This is being done by using a while loop.

READ
WRITE
OPEN
CLOSE

ABCDEFGHIJKLMNOPQRSTUVWXYZ
1234567890
`~!@#$%^&*()_-=+{}[]\|;:"'<,>.?/

----- END ok.txt ------


*/