I/O files help with C++ programing?

I am writing a program and I am supposed to ask the user for the name of a file. The 1st line of the file given contains the name of a 2nd file. I need to read the 1st line of the file given by the user to open th 2nd file. How do I do this?
Please help!!

You should probably add some error handling but this code will work fine if everything is set up perfectly (e.g. the files exist, user enters proper information, file data is correct, etc.). Here's my attempt:

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

int main ()
{
string filename1, filename2;

cout << "Enter the file name: ";
cin >> filename1;

ifstream infile1, infile2;
infile1.open(filename1);
getline(infile1, filename2);
infile1.close();

infile2.open(filename2);
// do stuff with file#2 here
infile2.close();

return 0;
}

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