/* What can a file descriptor describe?
 * A file
 * A pipe
 * A piece of information from the kernel that looks like a file but isn't
 * A network socket (we'll leave that for 435)
 * A hardware device
 * A thing that looks like a hardware device but is actually done in software
 */
#include<fcntl.h>
#include<stdio.h>
#include<unistd.h>

int main(){
	int fd = open("/dev/random", O_RDONLY);
	if(fd == -1){
		perror("");
		return 1;
	}
	float random_number;
	read(fd, &random_number, sizeof(float));
	printf("Our random number is:  %f\n", random_number);

	close(fd);
	return 0;

}