Answered: Create a new file called…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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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:
1. Declare an integer variable called myInt and assign the value 15 to it.
2. Declare a pointer variable called myPointer using the dereference operator (*) and assign it to the memory location of myInt using the address-of operator (&)
1. Print the memory location of myInt (remember the address-of operator!) and the value of myPointer.
2. Print the value of myInt and the value pointed to by myPointer (remember the dereference operator!)
1. Change the value of myInt to 10.
2. Print the memory location of myInt (remember the address-of operator!) and the value of myPointer.
3. 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 upload the picture as part of your assignment submission.

Create a new file named array_ptrs.cpp and in this file, write a program that does the following:

Defines an array of integers called my_ints with a pre-specified size of 4.
Populates my_ints with input data provided by the user
Defines an array of pointers called my_ptrs of the same size as my_ints and initializes the pointers in my_ptrs to point to corresponding elements of the array my_ints (refer to the “initial state” in the example shown below)
Sort the array of pointers my_ptrs in a way such that the pointer at index 0 (i.e., the first element of my_ptrs) points to the smallest element in my_ints, the pointer at index 1 points to the next larger element in my_ints, etc. (refer to the “State after sorting my_ptrs” in the example shown below).
Traverse the array my_ptrs and print the values being pointed to by each pointer in this array.

Example:
Initial state:
State after sorting my_ptrs:
my_ptrs
my_ints
my_ptrs
my_ints
10
10
1
1
25
25
7
7
Expected output:
1 7
10
25
XX

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