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#include <iostream>
#include <fstream>
#include <cmath>
using namespace std;
int largest(int numberstorage[], int x)
{
int maximum = 0;
maximum = numberstorage[0];
for (int b = 1; b <= x ; b++)
{
if(numberstorage[b]> maximum)
{
maximum = numberstorage[b];
}
}
return maximum;
}
int smallest(int numberstorage[], int x)
{
int minimum = 0;
minimum = numberstorage[0];
for (int b = 1; b <= x; b++)
{
if(numberstorage[b] < minimum)
{
minimum = numberstorage[b];
}
}
return minimum;
}
int total(int numberstorage[], int x)
{
int filesum = 0;
for (int b = 0; b <= x; b++)
{
filesum+=numberstorage[b];
}
return filesum;
}
int mean (int numberstorage[], int x)
{
int mean = 0;
mean = ((total(numberstorage, x))/x);
return mean;
}
int variance (int numberstorage[], int x)
{
int variance = 0;
int variancetotal = 0;
for (int b = 0; b < x; b++ )
{
variancetotal += pow(((numberstorage[b]) - (mean(numberstorage, x))), 2);
}
variance = (variancetotal/ (x-1));
return variance;
}
int standardDev (int numberstorage[], int x)
{
int standardDev = 0;
standardDev = sqrt(variance(numberstorage,x));
return standardDev;
}
int main()
{
fstream infile;
infile.open("randomnumbers1.txt");
int num, x = 0;
int numberstorage[x];
while(infile >> num)
{
numberstorage[x] = num;
cout << num << " ";
x++;
}
char selection;
cout << endl;
cout << "Please choose one of the following options:" << endl;
cout << "A) Count the Total Number of Integers in File (Sample Size)" << endl;
cout << "B) Retrieve the Minimum & Maximum of Integers in List" << endl;
cout << "C) Compute the Total Sum of Numbers in List" << endl;
cout << "D) Compute the Mean of Numbers in List" << endl;
cout << "E) Compute the Variance of Numbers in List " << endl;
cout << "F) Compute the Standard Deviation of Numbers in List" << endl;
cin >> selection;
cout << endl;
switch(selection)
{
case 'A':
case 'a': cout << "Total Number of Integers from File: " << x << endl;
break;
case 'B':
case 'b': cout << "Maximum Integer from File:" << largest(numberstorage, x) << endl;
cout << "Minimum Integer from File:" << smallest(numberstorage, x) << endl;
break;
case 'C':
case 'c':
cout << "Total Sum of Numbers from File:" << total(numberstorage, x) << endl;
break;
case 'D':
case 'd': cout << "Mean of Numbers from File:" << mean(numberstorage, x) << endl;
break;
case 'E':
case 'e': cout << "Variance of Numbers from File:" << variance(numberstorage, x) << endl;
break;
case 'F':
case 'f': cout << "Standard Deviation of Numbers from File:" << standardDev(numberstorage, x) << endl;
break;
}
infile.close();
return 0;
}
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