ssos8b.c

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

int main()
{
	char buff1[ ]="abcdefghijklmnop ";
	char buff2[ ]="ABCDEFGHIJKLMNOP ";
	int fd;

	fd=open("new.dat",O_WRONLY|O_CREAT,0777);
	write(fd,&buff1,16);
	lseek(fd,48,SEEK_SET);
	write(fd,&buff2,16);
	close(fd);
	printf("The contents of the file are:\n");
	system("od -c new.dat");
	exit(0);
}