#include <iostream>

#include <fstream>

#include <cstdlib>

using namespace std;

const int SIZE = 70;

int main(int argc, char *argv[])

{

char filename[SIZE];

ifstream inFile;

std::cout << "enter name of data file" << std::endl;

cin.getline(filename, SIZE);

inFile.open(filename);

if(!inFile.is_open())

{

std::cout << "Could not open the file " << filename << std::endl;

std::cout << "Program terminating." << std::endl;

exit(EXIT_FAILURE);

}

double value;

double sum = 0.0;

int count = 0;

inFile >> value;

while(inFile.good())

{

++count;

sum += value;

inFile >> value;

}

if(inFile.eof())

{

std::cout << "End of file reached." << std::endl;

}

else if(inFile.fail())

{

std::cout << "Input terminated by data mismatch." << std::endl;

}

else

{

std::cout << "Input terminalted for unkown reason." << std::endl;

}

if(count == 0)

{

std::cout << "No data processed." << std::endl;

}

else

{

std::cout << "Item read:" << count << std::endl;

std::cout << "Sum: "<< sum << std::endl;

std::cout << "Average: " << sum/count << std::endl;

}

inFile.close();

return 0;

}