[C/C++] Example / Reading & Writing to a Binary File

//
//  main.cpp
//
//  Created by gchoi on 2014. 5. 8..
//  Copyright (c) 2014년 gchoi. All rights reserved.
//

#include <iostream>
#include <fstream>
#include <strstream>

const int MAX_SIZE = 2048;

using namespace std;

int main(int argc, const char * argv[])
{
    string filename1 = "{YOUR_FILE_PATH}/img0.jpg";
    string filename2 = "{YOUR_FILE_PATH}/img1.jpg";
    char buff[MAX_SIZE];
   
    ifstream ifs(filename1.c_str(), ios::in | ios::binary);
    if(!ifs) {
        cerr << "can't open input file" << endl;
        exit(1);
    }
   
    ofstream ofs(filename2.c_str(), ios::out | ios::trunc | ios::binary);
    if(!ofs) {
        cerr << "can't open output file" << endl;
        exit(1);
    }
   
    while(!ifs.eof()) {
        ifs.read(buff, MAX_SIZE);
        ofs.write(buff, ifs.gcount());
    }
   
    ifs.clear((ios::eofbit | ios::failbit) ^ ifs.rdstate());
    if(ifs.good() && ofs.good())
        cout << "correct" << endl;
    else
        cout << "bad\n" << "state of ifs : " << ifs.rdstate() << "\nstate of ofs : " << ofs.rdstate() << endl;
   
    ifs.close();
    ofs.close();
   
    return 0;
}