Lesson 10 Activity 1

#include <iostream>
#include <fstream>
#include <stdio.h>
#include <cstdlib>
#include <string>
#include <iomanip>
#include <cmath>
using namespace std;

string getFileInfo();
double calculateMean (string filename);
int calculatorMin(string filename);

//***********************************
// Int main                         *
// Where we tie in all the funtions *
//***********************************
int main ()
{
string filename = getFileInfo(); // getting file name
double mean = calculateMean( filename); // avg
int min = calculatorMin(filename); // min
return 0;
}

//***************************************************
//Function getFileInfo                              *
//Function for getting the text file name from user *
//***************************************************
string getFileInfo() {
    string filename;
    ifstream inputFile;
    // asking user for name
    cout << "Please enter a file name to read from: ";
    cin >> filename;

   inputFile.open(filename);

   if (inputFile)
   {
       inputFile.close();
   }
   // if it doesnt open wrong ask for it again
   else
   {
    cout << "Error: Please enter a file name to read from: ";
    cin >> filename;
   }
    //if it opens then name is good and close file then return name
    //if it didn't open, ask for a new name.
    return filename;
}

//************************************************************
//Function calculateMean                                     *
//funtion for the calculating of the mean of all the numbers *
//************************************************************
double calculateMean(string filename)
{
    ifstream infile;
    float num=0;
    float total = 0.0;
    int count = 0;
    //varibles for finding median
    infile.open(filename);
    // While infile successfully extracted numbers from the stream
    while(infile >> num) {
        total += num;
        ++count;
    }
    // don't need the file anymore, close it
    infile.close();
    //output mean
       cout << "The mean was " << total/count << endl;
    // give the average
   return total/count;

}
//******************************************
// Function calculatorMin                  *
//funtion for calculating the minumum value*
//******************************************
int calculatorMin(string filename)
{

    ifstream infile;
    double min = 32767; // since all the numbers are positive
    float num;
    // varibles
    infile.open(filename);

    while (infile >> num)
    {
        {
        if (num < min)
            min = num;
        } // algorithm for median
    }

    infile.close();

    cout << "The minumum number is " << min << endl;
    // out put minumum number
}