传递数组和计算平均C++的问题

我已经陷入困境了一天。该代码应该在文本文件中找到最大数量和最小数量，然后输出这些数字的平均值。除了平均水平外，一切都很好。它根本不计算。我知道问题是我无法正确地使用我的find_average函数中的数组，但是，对于我的一生，我只是无法围绕自己做错了什么。请帮助。

//  Student:        Tyler Brady
//  Assignment:     5
//  File:           assing5.cpp
//  Input:          Keyboard
#include <iostream>
#include <fstream> // I/O
#include <iomanip> // For setw()
using namespace std;
ofstream outputfile("output.txt");
const int MAX_FILE_NAME = 35;  // Maximum file name length
const int MAX_NUMBER_SCORES = 40;  // Maximum number of values in array
void open_input(ifstream& input, char name[]);                       // Get file name, Open file
void read_values(ifstream& input, double v[], int size, int& used);  // Read values from file
void find_max_min(const double v[], int n, double& max, double& min);// Find max/min in array
void output(const char name[], const double v[], int n,
    double max, double min, double average, ostream &out = cout);            // Print Results
double find_average(const double v[], int n);
int main()
// Parameters: None
// Returns:    Zero
// Calls:      open_input(), read_values(), find_max_min(), output()     
{
    char     again;                        // Does user want to go through loop again?
    char     file_name[MAX_FILE_NAME + 1]; // Name of file to be processed
    ifstream input_numbers;                // Input file of doubles
    double   scores[MAX_NUMBER_SCORES];    // Array to hold scores processed
    double   max, min;                     // Maximum and minimum numbers from file
    int      num_scores;                   // Number of scores in file
    double average;
    cout << "This program can find the largest and smallest numbers in a filen"
        << "of at most " << MAX_NUMBER_SCORES << " floating-point values.n" << endl;
    system("pause"); // Hold message on screen until key is pressed
    do
    {
        open_input(input_numbers, file_name);    // Get file name & open file
        read_values(input_numbers, scores,
            MAX_NUMBER_SCORES, num_scores);       // Read values
        input_numbers.close();                   // Close file
        if (num_scores > 0)
        {
            find_max_min(scores, num_scores, max, min); // Find max & min values in array
            average = find_average(scores, num_scores);
            output(file_name, scores, num_scores, max, min, average); // Print results on screen
            output(file_name, scores, num_scores, max, min, average, outputfile); // and outputfile
        }
        else
        {
            cout << "nnaNo data in file: " << file_name << endl;
        }
        cout << "nDo you want to process another file (Y/N)? ";
        cin >> again;
        cin.ignore(256, 'n');  // Remove Enter key from keyboard buffer
    } while (again == 'y' || again == 'Y');
    cout << "nEnd of Program!" << endl;
    outputfile << "nnThanks for using MaxMin!f";
    outputfile.close();
    return 0;
}  // End of main()
void open_input(ifstream& input, char name[]) //Open file
                                              // Parameters: Variables for input file reference nad input file name
                                              // Returns:    None
                                              // Calls:      None
{
    int count = 0;             // Count number of tries
    do // Continue until we get a valid file name and can open file
    {
        count++;
        if (count != 1)  // Issue error message if we are trying again.
        {
            cout << "naInvalid file name or file does not exist. Please try again."
                << endl;
        }
        cout << "nEnter the input file name (maximum of " << MAX_FILE_NAME
            << " characters please)n:> ";
        cin.get(name, MAX_FILE_NAME + 1);// Gets at most MAX_FILE_NAME characters
        cin.ignore(256, 'n');           // Remove Enter key from keyboard buffer
        input.clear();                   // Clear all error flags, if any, from prev try
        input.open(name, ios_base::in); // Open to read only if file exists
    } while (input.fail());            // If can't open file, try again
} // End of open_input()
void read_values(ifstream& input, double v[], int size, int& used) // Read values
                                                                   // Parameters: Variables for file reference, variable for array reference,
                                                                   //             value for array size and variable for number of values in array
                                                                   // Returns:    None
                                                                   // Calls:      None
{
    double value;        // Value from file
    int count = 0;       // Count number of values in file
    while (count < size && input >> value) // Continue as long as there is 
                                           // room in the array and we can read
    {
        v[count] = value;                   // a number from file.
        count++;
    }
    used = count;
} // End of read_values()
double find_average(const double v[], int n)
{
    double value;
    double sum = 0;
    int count = 0;
    while (count >> value)
    {
        sum += value;
        count++;
    }
    return sum / count;
}
void find_max_min(const double v[], int n, double& max, double& min) // Find max & min values
                                                                     // Parameters: Variables for array reference, value for number of values 
                                                                     //             and variables for max and min values
                                                                     // Returns:    None
                                                                     // Calls:      None
{
    int i;   // Array index and loop counter
    max = min = v[0];
    for (i = 1; i < n; i++) // Start with 1 since max & min initialized to v[0]
    {
        if (v[i] > max) max = v[i];
        if (v[i] < min) min = v[i];
    }
} // End of find_max_min()
void output(const char name[], const double v[], int n,
    double max, double min, double average, ostream& out)
    // Parameters: File name, array reference, number of values and max & min values
    // Returns:    None
    // Calls:      None
{
    int i;  // Array index and loop counter
    out.setf(ios::fixed);
    out.setf(ios::showpoint);
    out.precision(1);
    out << "nnInput File Name:         " << name << endl;
    out << "nFile Contents:" << endl;
    for (i = 0; i < n; )
    {
        out << setw(8) << v[i];
        if (++i % 5 == 0) out << "n"; // Print only 5 values per line
    }
    if (i % 5 != 0) out << "n";      // Newline if last line is short
    out << "nLargest  Number in File:        " << setw(8) << max << endl;
    out << "Smallest Number in File:        " << setw(8) << min << endl;
    out << "Average of Numbers:        " << setw(8) << average << endl;
} // End of output()