code

#include <iostream>
#include <fstream>
#include <iomanip>
#include <string>
using namespace std;
const int MAX_SIZE = 100;
void Fill_Array(int Size[], int& count, int& numbers_used);
void Print_Array(int Size[], int count);
double Calc_Average(int Size[], double average);
void Sort(int Size[], int numbers_used);
void Swap(int& v1, int& v2);
int index_of_smallest(const int Size[], int start_index, int number_used);
int Calc_Median(int median, int Size[]);
void Print_Array_and_Calculations(int median, double average);
int main()
{
    ifstream in_size;
    int count;
    int Size [MAX_SIZE],
        numbers_used = 0,
        median = 0;
    double average = 0.0;
    Fill_Array(Size, count, numbers_used);
    Print_Array(Size, count);
    average = Calc_Average(Size, average);
    Sort(Size, numbers_used);
    Calc_Median(median, Size);
    Print_Array_and_Calculations(median, average);
    in_size.close();
    return 0;
}
void Fill_Array(int Size[], int& count, int& numbers_used)
{
    int size;
    char name[16];
    ifstream in_size;
    string name;
    in_size.open (name);
    cout << "Enter the file to read in: ";
    cin >> name;
    cout << endl << "The numbers in the array are:" << endl << endl;
    if(in_size.fail())
    {
        cerr << "Error opening file" << endl;
        exit(1);
    }
    count = 0;
    in_size >> size;
    while((!in_size.eof()) && (count <= MAX_SIZE))
    {
        Size[count] = size;
        count++;
        in_size >> size;
    }
    in_size.close();
}
void Print_Array(int Size[], int count)
{
    int number_used = 0;
    for(int index = 0; index < number_used; index++)
        cout << Size[index] << " ";
}
double Calc_Average(int Size[], double average)
{
    int total = 0;
    for (int i = 0; i < MAX_SIZE; i++)
    {
        total = total + Size[i];
    }
    average = double(total) / MAX_SIZE;
    return average;
}
void Sort(int Size[], int number_used)
{
    int index_of_next_smallest;
    for (int index = 0; index < number_used - 1; index++)
    {
        index_of_next_smallest = index_of_smallest(Size, index, number_used);
        Swap(Size[index], Size[index_of_next_smallest]);
    }
}
void Swap(int& v1, int& v2)
{
    int temp;
    temp = v1;
    v1 = v2;
    v2 = temp;
}
int index_of_smallest(const int Size[], int start_index, int number_used)
{
    int min = Size[start_index],
        index_of_min = start_index;
    for (int index = start_index + 1; index < number_used; index++)
        if(Size[index] < min)
        {
            min = Size[index];
            index_of_min = index;
        }
        return index_of_min;
}
int Calc_Median(int median, int Size[])
{
    median = Size [ MAX_SIZE / 2 ];
    return median;
}
void Print_Array_and_Calculations(int median, double average)
{
    cout << endl << "The average of the numbers is " << average;
    cout << endl << "The median of the numbers is " << median;
    cout << endl << endl;
}