#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

#define BUFSIZE 100

int main(int argc, char **argv){
  int inFile, newFile;
  char buf[BUFSIZE];
  int ret, wRet;
  
  if (argc != 3){
    printf("Usage...\n");
    exit(1);
  }
  
  inFile = open(argv[1], O_RDONLY);
  if (inFile == -1){
    printf("Open failure!\n");
    exit(1);
  }

  newFile = creat(argv[2], 0644);
  if (newFile == -1){
    printf("Open failure!\n");
    exit(1);
  }

  while((ret=read(inFile, buf, BUFSIZE)) > 0){
    wRet = write(newFile, buf, ret);
    if (ret != wRet){
      printf("Write Failed!\n");
      exit(1);
    }
  }
  
  close(inFile);
  close(newFile);

  return 0;

}