/* This very simple text-compression algorithm works by
   stripping away the high-order 0 from the bytes of
   ASCII characters and transmitting the low-order 
   7 bits, thus compressing the file to 7/8 its original
   size.

   Usage:  simple_compress < sourcefile > destinationfile
*/

#include<stdio.h>
#include<stdlib.h>
main()
{
  int ch;
  unsigned char inbyte,outbyte,mask;
  int outshiftcount=0;
  while((ch=getchar())!=EOF)
    {
      inbyte = (unsigned char) ch;
      mask=64;
      while(mask!=0)
	{
	  outbyte=(outbyte<<1)|(((inbyte&mask)!=0)?1:0);
	  outshiftcount++;
	  if(outshiftcount==8)
	    {
	      putc(outbyte,stdout);
	      outshiftcount=0;
	    }
	  mask=mask>>1;
	}
    }
  if(outshiftcount !=0)
    {
      outbyte=outbyte<<8-outshiftcount;/*if untransmitted bits remain,
					shift them left*/
      putc(outbyte,stdout);
    }
}