// File: readAndPrint.cpp
// Example of opening, reading, and printing a file of integers

#include <iostream>
#include <iomanip>
#include <fstream>

using namespace std;

// Opens file designated by user. Returns whether file was opened.
// Parameters:
// inf		import/export
bool openFile(ifstream &inf);

// Read elements in file and place in array
// Parameters:
// inf		import/export
// list		output only 
// items	output only; actual # items read. Stop at max if not eof
// max		input only; maximum items array can hold
void readFile(ifstream &inf, int list[], int &items, int maxRead);

// Print the integers read
// list		input only 
// items	input only; actual # items read. 
void printFileContents(int list[], int items);

int main()
{ ifstream inf;
  int list[10];
  int items;  // # elements in array
  if (openFile(inf)) {
    readFile(inf,list,items,10);
    printFileContents(list,items);
  }
}

// Opens file designated by user. Returns whether file was opened.
// Parameters:
// inf		import/export
bool openFile(ifstream &inf)
{ string fileName;
  cout << "Enter File Name >";
  cin >> fileName;
  inf.open(fileName.c_str());
  return(inf);   // returns true if file found and opened
}

// Read elements in file and place in array
// Parameters:
// inf		import/export
// list		output only 
// items	output only; actual # items read. Stop at max if not eof
// maxRead	input only; maximum items array can hold
void readFile(ifstream &inf, int list[], int &items, int maxRead)
{ int value;
  items=0;
  while (items<maxRead && inf >> value)
    list[items++]=value;
}

// Print the integers read
// list		output only 
// items	input only; actual # items read. 
void printFileContents(int list[], int items)
{ for (int i=0;i<items;i++)
    cout << setw(3) << i << ":" << list[i] << endl;
}