#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>


 void data_create(char *filename);
 void pos_create(char *filename);


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



}

void data_create(char *filename)
{
   int fd1;

   if ((fd1 = open(filename, O_CREAT| O_RDWR | O_TRUNC | O_APPEND, S_IRWXU)) == -1) {
		write(2,"file error...\n",20);
		_exit(1);

	}
	close(fd1);
}

void pos_create(char *filename)
{
   int fd2;
   if ((fd2 = open(filename, O_CREAT| O_RDWR | O_TRUNC | O_APPEND, S_IRWXU)) == -1) {
      write(2,"file error...\n",20);
		_exit(1);

	}
	close(fd2);
}