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#include <iostream>
#include <fstream>
#include <ctime>
#include <cstdlib>
using namespace std;
struct Number
{
int no;
int oddDigits;
int evenDigits;
int sumDigits;
int noDigits;
char status [10]; // will take value "Longer or "Shorter" or "Equal"
};
void constructInfile (fstream&, char []);
int fileToArray (fstream&, char [], Number []);
void getNumbersInfo (Number [], int);
void arrayToFile (ofstream&, char [], Number [], int);
int NumType (int type);
const int MAX = 10;
int main ()
{
fstream afile;
Number numbers [MAX];
int size;
srand (time (NULL));
constructInfile (afile, "infile.txt");
size = fileToArray (afile, "infile.txt", numbers);
ofstream outfile;
arrayToFile (outfile, "outfile.txt", numbers, size);
return 0;
} // main
// Construct infile.txt with 2-10 numbers of integers
// not more than 100000
void constructInfile (fstream& afile, char fileName [])
{
int size = rand () % 9 + 2;
afile.open (fileName, ios::out);
if (!afile)
{
cout << "File Status: Open for writing failed" << endl;
exit (1);
}
for (int i = 1; i <= size; i++)
{
afile << rand () * rand () % 10000
<< "\t //Number " << i << endl;
}
afile.close ();
} // constuctInfile
// Read infile.txt, constructs an array from the numbers
// and get the info from the numbers
int fileToArray (fstream& afile, char fileName [], Number numbers [])
{
int size = 0;
int number;
afile.open (fileName, ios::in);
while (afile >> number)
{
afile.clear ();
afile.ignore (100, '\n');
numbers [size].no = number;
getNumbersInfo (numbers, size);
size ++;
}
cout << "File Status: ";
if (!afile.eof ())
cout << "End of file not hit" << endl << endl;
else
cout << "End of file hits" << endl << endl;
afile.close ();
return size;
} // fileToArray
// Get info from the numbers in the array
void getNumbersInfo (Number numbers [], int size)
{
numbers [size].oddDigits = 0;
numbers [size].evenDigits = 0;
numbers [size].sumDigits = 0;
numbers [size].noDigits = 0;
int number = numbers [size].no;
while (number > 0)
{
// Find number of odd/even digits
if (number % 2)
numbers [size].oddDigits ++;
else
numbers [size].evenDigits ++;
// Find the sum of digits
numbers [size].sumDigits += number % 10;
// Find the number of digits
numbers [size].noDigits ++;
number /= 10;
}
} // getNumbersInfo
// Use the array numbers and info and construct
// an outfile.txt printed with the required info
void arrayToFile (ofstream& outfile, char fileName[],
Number numbers [], int size)
{
outfile.open (fileName);
if (!outfile)
{
cout << "File Status: Incorrect file, ensure that you have correct file" << endl;
exit (1);
}
cout << "No\tOdd\tEven\tSum\tDigit" << endl;
outfile << "No\tOdd\tEven\tSum\tDigit" << endl;
for (int i = 0; i < size; i ++)
{
cout << numbers [i].no << "\t"
<< numbers [i].oddDigits << "\t"
<< numbers [i].evenDigits << "\t"
<< numbers [i].sumDigits << "\t"
<< numbers [i].noDigits << endl;
outfile << numbers [i].no << "\t"
<< numbers [i].oddDigits << "\t"
<< numbers [i].evenDigits << "\t"
<< numbers [i].sumDigits << "\t"
<< numbers [i].noDigits << endl;
}
outfile.close ();
} // arrayToFile
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