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

int
main(int argc, char **argv){
  unsigned long count=0;
  FILE	*fin,*fout1,*fout2;
  char	fname1[256],fname2[256];
  char	*buf;
  int	ret;


  if(argc < 3){
    exit(1);
  }

  strcpy(fname1,argv[1]);
  strcpy(fname2,argv[1]);

  strcat(fname1,".odd");
  strcat(fname2,".even");

  fout1=fopen(fname1,"wb");
  fout2=fopen(fname2,"wb");

  fin=fopen(argv[1],"rb");

  buf=(char *)malloc(sizeof(char)*atoi(argv[2]));

  while(1){

    if( (ret=fread(buf,sizeof(char),atoi(argv[2]),fin)) == 0)
      break;

    fwrite(buf,ret,1,fout1);

    if( (ret=fread(buf,sizeof(char),atoi(argv[2]),fin)) == 0)
      break;

    fwrite(buf,ret,1,fout2);
  }

  fclose(fin);
  fclose(fout1);
  fclose(fout2);
}