Accessing Data in a File

// Accessing Data in a File.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "algorithm"
#include "fstream"
#include "functional"
#include "iostream"
#include "iterator"
#include "vector"
using namespace std;
template <class T>
void print (T & c)
{
       for (typename T:: iterator i = c.begin(); i != c.end(); i++)
       {
             std::cout << *i << endl;
       }
}

int _tmain(int argc, _TCHAR* argv[])
{
       vector <int> output_data(10);
       generate(output_data.begin(), output_data.end(), rand);
       transform (output_data.begin(), output_data.end(), output_data.begin(),bind2nd( modulus<int>(), 10 ) );
       ofstream out("data.txt");
       if(!out)
       {
             cout <<" Couldn't open output file " << "\n";
             return 0;
       }
     copy( output_data.begin(), output_data.end(),ostream_iterator<int>( out, "\n" ) );
     out.close();
     ifstream in( "data.txt" );
     if( !in )
     {
       cout << "Couldn't open input file\n";
       return 0;
     }
     vector<int> input_data( (istream_iterator<int>( in )),istream_iterator<int>() );
     in.close();
     print( output_data );
     print( input_data );
        system("pause");
        return 0;
}


Share on Google Plus