#include <iostream>
#include <fstream>
using namespace std;

ofstream outfile;
unsigned char mask;
unsigned char ch;

void putBits (char str[])
{
 int i = 0;
 while (str[i] != '\0')
   {
    if (str[i] == '1')
       ch = ch | mask;
    mask = mask >> 1;
    //cout << i << ": " << str[i] << " {" << hex << (int)ch << "}";
    //cout << "<" << hex << (int)mask << ">" << endl;

    if (mask == 0)
      {
       outfile.put (ch);
       mask = 128;
       ch = 0;
      }
    i++;
   }
}

void padToEndOfByte (char str[])
{
 int i = 0;
 while (str[i] != '\0')
   {
    if (str[i] == '1')
       ch = (ch | mask);
    mask = mask >> 1;
    //cout << "Padding " << i << ": " << str[i] << " {" << hex << (int)ch << "}";
    //cout << "<" << hex << (int)mask << ">" << endl;


    if (mask == 0)
      {
       outfile.put (ch);
       mask = 128;
       ch = 0;
       return;
      }
    i++;
   }
}


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

 if (argc < 2)
   {
    cout << "Usage: " << argv[0] << " filename " << endl;
    exit(1);
   }

 cout << argv[0] << ": opening file " << argv[1] << endl;
 outfile.open (argv[1]);
 mask = 128;
 ch = 0;

 putBits ("0110110");
 putBits ("110");
 putBits ("1111110110110");
 putBits ("0110110");
 putBits ("001110");

 padToEndOfByte ("111111111111111111");
 outfile.close();

}