#include <stdio.h>
#include <string.h>
#include <stdlib.h>

FILE *fptr0, *fptr1, *fptr2;
int fd1, fd2;

char fname0[30];
char fname1[30];
char fname2[30];

size_t dataCount, holeCount;

int byte;
int i, j, k, count;
int buffer[260000];
int dataBuffer[130000];
int holeBuffer[130000];

int main(void)
{
  printf("Starting main()\n");
  strcpy(fname0, "test.xfr");
  printf("First file name set\n");
  strcpy(fname1, "data.xfr");
  strcpy(fname2, "hole.xfr");

  if(( fptr0 = fopen(fname0, "rb") ) == NULL) {
    printf("Unable to open transmit file %s\n", fname0);
    exit(0);
  }
  else {
  printf("Input data file %s open\n", fname0);
  }

  if(( fptr1 = fopen(fname1, "wb") ) == NULL) {
    printf("Unable to open first output file %s\n", fname1);
    exit(0);
  }
  else {
  printf("First output data file %s open\n", fname1);
  }

  if( ( fptr2 = fopen(fname2, "wb")) == NULL) {
    printf("Unable to open second output file %s\n", fname2);
    exit(0);
  }
  else {
  printf("Second output data file %s open\n", fname2);
  }

  printf("\n\n");

  // read entire file into a buffer

  i = 0;
  while ((byte = fgetc(fptr0)) != EOF) 
    buffer[i++] = byte;


// split into two buffers
  count = i + 1;
  i = 0;

  for (k = 0; k < count; k+=2 )
  {
    dataBuffer[i++] = buffer[k];
  }
  printf("Data Buffer has %d bytes\n", i);
  j = 0;
  for (k = 1; k < count; k+=2 )
  {
    holeBuffer[j++] = buffer[k];
  }
  printf("Hole Buffer has %d bytes\n", j);
  
//  output two files

printf("\n");

// dataCount = write( fd1, dataBuffer, i);
// holeCount = write( fd2, holeBuffer, j);

for (k = 0; k < i; k++)
  fputc(dataBuffer[k], fptr1);

for (k = 0; k < j; k++)
  fputc(holeBuffer[k], fptr2);


printf("dataCount = %d, holeCount = %d\n", (int)dataCount, (int)holeCount);

fclose(fptr0);
close(fd1);
close(fd2);
}