// file read & print -- Class exercise

#include "stdafx.h"
#include <iostream>
using namespace std;

#include <fstream>
#include <vector>
#include <iomanip>

const int fileSize = 20;

class fileReader
{
private:
    
    vector<unsigned char> data(fileSize);

public:

    bool readData( ifstream fp );

    void printData() const;

};

void main()
{
    ifstream DFptr( "xxx.dat", ios_base::binary );

    fileReader xxx;

    if( xxx.readData( DFptr ) == 0 )
    {
        cout << "Open file failed!" << '\n';
        system("pause");
        exit(1);
    }
    xxx.printData();

    system("pause");
}

bool fileReader::readData( ifstream fp )
{
    if( !fp )
        return 0;
    else
    {
        int i;
        for(i = 0; i < fileSize; i++)
            fp >> data[i];
        return 1;
    }
}

void fileReader::printData() const
{
    int i;
    for(i = 0; i < fileSize; i++)
        cout << setw(5) << data[i];
}