[RESOLVED] How would I alphabetize this?

[smurf12125]

How would I alphabetize this with the different strings? Would I just need to use a bubble sort?

#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>
using namespace std;
int main()
{
    string my_string;
cout << "This program is a database for storing information." << endl;
ofstream myfile;
myfile. open ("data.txt", ios::app);
string x;
string y;
string z;
string a;
string b;
getline (cin, x);
myfile << x << endl;
getline (cin, y);
myfile << y << endl;
getline (cin, a);
myfile << a << endl;
getline (cin, b);
myfile << b << endl;
myfile. close ();
system("pause");
return 0;
}