Somebody can help me to point out the error? this code everything are ok except

Question

Somebody can help me to point out the error?

this code everything are ok except the arithmetic mean and root-mean-square calculate, it show below:

Arithmetic Mean = 0.00

Root-Mean-Square =0.00

//#include "stdafx.h"

#include <iostream>

#include <fstream>

#include <cmath>

using namespace std;

const int numValues = 26;

class Roughness

{

public:

void instructions ();

void readData();

double arithmeticMean();

double rootMeanSquare();

void findMaximum();

void printReport();

private:

double average,

   square,

   maximum,

   data[numValues];

};

int main()

{

double mean, square;

Roughness r;

r.instructions();

r.readData ();

mean = r.arithmeticMean();

square = r.rootMeanSquare();

r.findMaximum();

r.printReport();

return 0;

}

void Roughness::instructions ()

{

cout << "instructions" << endl;

}

void Roughness::readData()

   {

ifstream inputFileObject;

inputFileObject.open("surface.txt");

if(inputFileObject.fail())

{

cout<<" Your input file would not open.Sorry.Goodbye. ";

exit(1);

}

//inputFileObject >>numberToProcess;

for (int i =0; i < numValues; i++)

{

inputFileObject >>data[i];

}

inputFileObject.close();

return;

   }

double Roughness::arithmeticMean()

{

double average;

double sum = 0.0;

for(int i=0;i<numValues;i++)

   sum += abs(data[i]);

average = sum/numValues;

return average;

}

double Roughness::rootMeanSquare()

   {

double square = 0;

for(int i=0; i<numValues; i++)

{

square += pow(data[i],2);

}

square =sqrt(square/numValues);

return square;

   }

void Roughness::findMaximum()

{

maximum = data[0];

for(int i=1;i<numValues;i++)

   if(data[i] > maximum)

maximum = data[i];

}

void Roughness::printReport()

{

   cout.setf(ios::showpoint | ios::fixed);

   cout.precision(2);

   cout<<" Report Results Data Values ";

   for(int i=0;i<numValues;i++)

   cout<<data[i]<<" ";

   cout<<" Arithmetic Mean = "<<average;

   cout<<" Root-Mean-Square ="<<square;

   cout<<" Maximum = "<<maximum<<" ";

   return;

}

Explanation / Answer

include the header file, and run the program. as

#include<stdlib.h>

the output for the program is given below

-------------------------------------------------------------------------------------------------------------------------------------------------------

#include <iostream>
#include <fstream>
#include <stdlib.h>
#include <cmath>
using namespace std;

const int numValues = 26;

class Roughness
{
public:
void instructions ();
void readData();
double arithmeticMean();
double rootMeanSquare();
void findMaximum();
void printReport();
  
  
private:
double average,
square,
maximum,
data[numValues];
};



int main()
{
double mean, square;
  
Roughness r;
r.instructions();
r.readData ();
mean = r.arithmeticMean();
square = r.rootMeanSquare();
r.findMaximum();
r.printReport();
  
return 0;
}

void Roughness::instructions ()
{
cout << "instructions" << endl;
}

void Roughness::readData()

{
ifstream inputFileObject;
inputFileObject.open("surface.txt");
if(inputFileObject.fail())
{
cout<<" Your input file would not open.Sorry.Goodbye. ";
exit(1);
}
//inputFileObject >>numberToProcess;
for (int i =0; i < numValues; i++)
{
inputFileObject >>data[i];
}
inputFileObject.close();
return;
}
  
double Roughness::arithmeticMean()
  
{
double average;
double sum = 0.0;
for(int i=0;i<numValues;i++)
sum += abs(data[i]);
average = sum/numValues;
return average;
}
  
double Roughness::rootMeanSquare()
  
{
double square = 0;
for(int i=0; i<numValues; i++)
{
square += pow(data[i],2);
}
square =sqrt(square/numValues);
return square;
}
void Roughness::findMaximum()
{
maximum = data[0];
for(int i=1;i<numValues;i++)
if(data[i] > maximum)
maximum = data[i];
}
void Roughness::printReport()
{
cout.setf(ios::showpoint | ios::fixed);
cout.precision(2);
cout<<" Report Results Data Values ";
for(int i=0;i<numValues;i++)
cout<<data[i]<<" ";
cout<<" Arithmetic Mean = "<<average;
cout<<" Root-Mean-Square ="<<square;
cout<<" Maximum = "<<maximum<<" ";
   return;
}

output

instructions

Your input file would not open.Sorry.Goodbye.

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