C++ program not able to open files from user input

Question

#include <iostream>
#include <fstream>
#include <string>
#include <cmath>
#include <cstdlib>
#include <iomanip>

using namespace std;

int main() {
    ifstream inputFile;
    string fileName;
    int value = 0;
    int numOfNumbers = 0;
    int oddNumbers = 0;
    int evenNumbers = 0;
    double sum = 0.0;
    double average = 0.0;
    int counter = 0;


    //Ask user for file name
    cout << "Enter file name to read: " << endl;
    cin >> fileName;

    //Open file
    inputFile.open(fileName);


    //Calculate information
    if (inputFile.is_open())
    {
      while (inputFile >> value)
      {
          numOfNumbers++;
          sum += value;
      }
    }
    else
    {
    //Display error if file doesn't open
        cout << "Error reading file." << endl;
    }
    if (numOfNumbers > 0)
        average = sum / numOfNumbers;
    else
        average = 0.0;
    if (numOfNumbers > 0)
    {
        while (inputFile >> value)
        {
            counter++;
            if (value % 2 == 0)
                evenNumbers++;
            else
                oddNumbers++;
        }
        cout << "Number of numbers = " << numOfNumbers << endl;
        cout << "Average = " << average << endl;
        cout << "Sum = " << sum << endl;
        cout << "Number of even numbers: " << evenNumbers << endl;
        cout << "Number of odd numbers: " << oddNumbers << endl;
    }
    else
        cout << "Cannot compute values." << endl;
    inputFile.close();
    return 0;
}

I cannot get this program to open my file nor read the contents to do these calculations. I have moved the file into the directory and have tried typing the name with the extension (.txt). I also removed the quotations I previously had placed around fileName in inputFile.open(fileName); Any recommendations?