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#include <iostream>
#include <cmath>
#include <fstream>
#include <string>
using namespace std;
// Prototypes
void Start_up();
void get_array_values(int[], int);
int get_array_values(int[], int, fstream&);
void Mean(int, int);
const int ARRAY_SIZE = 100;
int main()
{
ifstream ifile;
ofstream ofile;
string filename;
int array1[ARRAY_SIZE] = { 1, 2, 3 };
int number_of_values = ||| get_array_values(array1, ARRAY_SIZE, ifile); |||
Start_up();
system("pause");
system("cls");
cout << " Please enter the name of the input file" << endl
<< " in which the list of numbers is found." << endl;
getline(cin, filename);
int sum = 0;
for (int i = 0; i < number_of_values; i++)
{
cout << array1[i] << endl;
sum += array1[i];
}
Mean(sum, number_of_values);
ifile.open(filename, fstream::in);
if (ifile.is_open())
{
cout << " File " << filename << " was found.";
ifile.close();
}
else if (!ifile.is_open())
{
cout << " Unable to open file "<< filename;
return 1;
}
ofile.open("Data.txt");
ofile.close();
return 0;
}
void Start_up()
{
cout << endl << endl;
cout << " Hello and Welcome" << endl
<< " to the Math Calculator !" << endl
<< endl
<< " Do you have a list of numbers" << endl
<< " and want to be able to find the" << endl
<< " Average, Maximum, Median, Minimum," << endl
<< " Mode, and Std deviation of that list" << endl
<< " well worry no more this program does" << endl
<< " just that so sit back and relax." << endl;
}
void get_array_values(int array1[], int array_size)
{
for (int i = 0; i < array_size; i++)
{
cout << "Enter number " << i + 1 << ": ";
cin >> array1[i];
cout << endl;
}
}
int get_array_values(int array1[], int array_size, fstream &ifile)
{
int size;
ifile >> size;
// cout << endl << "Size = " << size << endl;
if (size > array_size)
{
cout << "This is an invalid input File." << endl;
cout << "size was bigger than " << array_size << endl;
exit(2);
}
for (int i = 0; i < size; i++)
{
ifile >> array1[i];
if (ifile.eof())
{
cout << "This is an invalid input File." << endl;
cout << "The size was larger than " << i << endl;
exit(3);
}
}
return size;
}
void Mean(int sum, int number_of_values)
{
double mean = 0;
mean = (static_cast <double> (sum)) / number_of_values;
cout << "The average is " << mean << endl;
}
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