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

int main(){
	int fd = open("file_descriptor.c", O_RDWR);
	char file_contents[1025];
	ssize_t readlen = read(fd, file_contents, 1025);
	
	write(fd, file_contents, readlen);

	close(fd);

}