// Copy a file
#include <fstream>      // std::ifstream, std::ofstream
#include <iostream>
#include <errno.h>
using namespace std;

int main (int argc, char *argv[]) {

  ofstream outfile(argv[argc-1], ios::binary | ios::trunc);
  if (!outfile)
  {
    cerr << "Bad file open for writing";
    exit(1);
  }

  // Copy each file from input to output
  for(int i = 1; i < argc-1; i++)
  { 
    ifstream infile(argv[i], ios::binary);
    if (!infile)
    {
        cerr << "Bad file open!" << endl;
        exit(1);
    }

    // get size of file
    infile.seekg (0,infile.end);
    long size = infile.tellg();
    infile.seekg (0);

    // allocate memory for file content
    char* buffer = new char[size];

    // read content of infile
    infile.read (buffer,size);

    // write to outfile
    outfile.write (buffer,size);

    // release dynamically-allocated memory
    delete[] buffer;

    if (infile && outfile)
    {
       cout << "Wrote " << size << " Bytes from " << argv[i] << "to " << argv[argc-1] << endl;
    }
    else
    {
        cerr << "Error writing!" << strerror(errno) << endl;
    }
    infile.close();
    
  }
  outfile.close();
  return 0;
}