Q. Lseek () is can be used to change the _________ of r/w pointer to move around in file without reading or writing any data.

Program language: C++ A publishing company markets both hardcopy and eBook versions of its work. Create a class publication that stores the title and price of a publication. From this class derive two classes: book, which adds a page count, and digital, which adds a storage capacity in MG bytes. Each of these classes should have a getdata() function to get its data from the user at the keyboard and put a putdata() function to display its data. Add a base class sales that hold an array of three floats so that it can record the dollar sales of a particular publication for the last three months. Include a getData() function to get three sales amounts from the user and a putdata() function to display the sales figures. Modify the book and digital classes so they are derived from both publication and sales. An object of the class book or digital should input and output sales data along with its other data. Write the main function to create a book object and a digital object and test their…

** Java Programming ** Please Use Basic Java not GUI •Pharmacy Management System• Your job is to think of a scenario of a Pharmacy! Where various types of medicines are sold! In this pharmacy, there will be 3 parts! Part-1: Admin In the admin part, the admin can add, delete medicines serially wherever he wants! (Medicine Name, Price)! All the added medicines will be stored in ‘Medicine.txt File’ there will be an admin id password! If the input password is wrong it will throw an exception! Part-2: Customer In the Customer Part, There will be 3 portions 1st one is for Sign Up, 2nd one is for Login and the last one is continuing as a guest! In Sign up part, the Customer needs to sign up for Shop Membership. After successful signup customers' data(name, age etc.) will be stored in a different file named ‘Customer Info.txt’! Then log in, in this portion customer needs to log in to his account to buy medicine! The customer will input the serial number and the quantity of the medicine which…

Memory Allocation: Select all of the following statements that are true. The basic idea of contiguous allocation is that each process is contained in a single contiguous section of memory. When using a single-partition allocation scheme, the main memory is usually divided into three partitions. Memory partitioning schemes allow for multiprogramming. When applying the multiple-partition allocation scheme "Fixed Partitions", all partitions always have the same size. When applying the multiple-partition allocation scheme "Variable Partitions", the FirstFit allocation strategy performs best in practice. The Buddy system is prone to internal fragmentation.

INSTRUCTION: C++ Language Create a function that writes to a file named Inventy.txt the information of 8 items. Ask the user for the item's name, the item's quantity in storage, and the item's price and write it to the file. Create a function that reads the file and items' quantity and price to two different arrays. Create a function that computes the subtotal of each item. Implement all functions inside the main program and the computed value should be displayed with the item's name.

Fill-in-the-Blank __________ variables are designed to hold addresses.

Assignment tasks: Create a new file called pointerBasics.cpp. Write a C++ program in this new file. In this new file, write code that will do the following: Declare an integer variable called myInt and assign the value 15 to it. Declare a pointer variable called myPointer using the dereference operator (*) and assign it to the memory location of myInt using the address-of operator (&) Print the memory location of myInt (remember the address-of operator!) and the value of myPointer. Print the value of myInt and the value pointed to by myPointer (remember the dereference operator!) Change the value of myInt to 10. Print the memory location of myInt (remember the address-of operator!) and the value of myPointer. Print the value of myInt and the value pointed to by myPointer (remember the dereference operator!) (1 point) Declare and assign values to variables (1 point) Print to console (1 point) Change values and print to console Take a screenshot of a sample output and…

write a complete statement write the declaration of P (a pointer to integer) * write the declaration of fin (input file stream that opens the file "mydata.txt") * write the declaration statement for funx (a float function with two integer arguments x and y both passed by reference) * read a character from the file fin and assign it to the variable T. * declare a pointer with the name Pnt1 to that points to the integer variable X. * close the file fin * Make the value pointed to by the pointer Ptr zero. *

1. Declare a file pointer called input. Open a file called location.txt for reading using this pointer. 2. If the file is not available, display “File does not exist. ". 3. The content of the text file location.txt is as shown below. It includes the location, latitude and longitude values. FILE location.txt CONTENTS UTM 1.5523763 103.63322 KLCC 3.153889 101.71333 UM 3.1185 101.665 UMS 6.0367 116.1186 UNIMAS 1.465174 110.4270601 Ask the user to enter a location. Check if the user's location can be found in the text file. If found, display the location, latitude and longitude as shown below. SAMPLE OUTPUT Enter a location: UM : UM : 3.1185 : 101.6650 Location Latitude Longitude Otherwise display “Sorry, location could not be found". SAMPLE OUTPUT Enter a location : MMU Sorry, location could not be found