Need some help

[Asatchaq]

Hey guys, I'm trying to write a program to read an unknown number of values from a user-specified file, and save them so that the program can later determine their mean value. I'm failing this class, and I don't understand what's going on. I figured I should use a vector, since the assignment speficied that the number of values can be anything up to 1000, so there's no set limit. This is the best I've been able to do:
------------------This part is meant to open the file---------------------------
#include <iostream>
#include <fstream>
#include <cstring>
using namespace std;

int main () {

string filename;
cout << "Enter filename: ";
cin >> filename;
cout << endl;

ifstream file(filename.c_str());

system ("Pause");
return 0;
}
--------------------------------------------------------------------------------
-------------------------This part is meant to declare the vector and read/store the values-----------------------------------------------------------

using namespace std;

int main () {

vector <double> fileValues (1000);



system ("Pause");
return 0;
}
--------------------------------------------------------------------------------

Obviously these are very rudimentary and wouldn't work very well. I'm in this class because I have to gave a computer science credit, it's not related to my degree and I've never done anything even remotely related to programming before. Once I know how to extract the values and save them to the array, i think I could manage to perform the mathematical operations, but it's getting to that step that's driving me nuts. Any help at all, or a push toward a useful resource, would be greatly appreciated. It's my last semester and I can't afford to fail!

[Vlykarye]

Hmm... I think... do you have a book that you can read? That would probably be the fastest way to learn everything you need to know before the class finishes. I know this isn't the answer you want, but if you need to know it all fast, then reading a book is the way to go. Otherwise, you could search the forums. There have been plenty of questions like this.

[Asatchaq]

Yeah, I'm using the book to try to get up to speed before the class ends, but right now I'm just trying to bang out this assignment, which is past due.