Need help with a while satement

[K094972B]

When I try to get the "low" to be outputted, it just outputs "0". I am not sure what else to do. Any advice and help is appreciated. Thanks in advance.

#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
        using namespace std;

void CalcAverage(string, float&);
void PromptForFile(string&);
void CalcLow(string, float&);

int main()
{
string dataFileName;
float average;
float low;

PromptForFile(dataFileName);
CalcAverage(dataFileName, average);
CalcLow(dataFileName, low);


}

void PromptForFile(string& fileName)
{
cout << endl << "What's the data filename? ";
cin >> fileName;
return;
}

void CalcAverage(string fileName, float& ave)
{
  ifstream inData;

 float total, value;
  int num;

  inData.open(fileName.c_str());

  total = 0;
  num = 0;
 inData >> value;
  while(inData)
    {
    num = num + 1;
    total = total + value;
    inData >> value;
    }
  ave = total / num;
  cout << endl;
  cout << fixed << "The average is " << setprecision(2)  << ave <<endl;

return;
}
void CalcLow(string fileName, float& low)
{
  ifstream inData;

  float total;
  float value;
  float count;
  float ave;
  float disLow;
  int num;

  inData.open(fileName.c_str());

  total = 0;
  num = 0;
  inData >> value;
  while(inData)
    {
     num = num + 1;
     total = total + value;
     inData >> value;
    }
  ave = total / num;
  disLow = ave - 5;

  while (inData)
    {
    if (value < disLow)
{
    low = low + 1;
    }
    inData >> value;

    }
  cout << "The distribution is" << endl;
  cout << fixed << setw(5) << "Low";
  cout << fixed << setw(10) << setprecision(0) << low << endl;

return;
}

           

[Moschops]

At what point in the code do you think you are setting low to something other than zero?

[K094972B]

Where I add 1 to low.. I might be completely wrong. What I need low to equal is how many times a number from the data file equals a number that is 5 less than the average.

[Moschops]

And how do you know that line 85 is ever being reached? Learn to debug.

For example:

cout << "About to read data from file" << endl;
 while (inData)
    {
     cout << "Top of data loop:  inData state is: ";
     if (inData) {cout << "Valid";} else {cout << "Invalid";}
     cout << "  Value is now: " << value << "  disLow is " << disLow;
    if (value < disLow)
{
    cout << "Incrementing low, from " << low << " to ";
    low = low + 1;
    cout << low << endl;
    }
    inData >> value;
    cout << "Data fetch attempted. inData state: ";
     if (inData) {cout << "Valid";} else {cout << "Invalid";}
    cout << "  Value read: " << value;

    }

Start thinking about how to test your own code, and then do it.