Given variables category, heat, and voltage, declare and assign the following pointers:• character pointer categoryPointer is assigned with the address of category.• integer pointer heatPointer is assigned with the address of heat.• double pointer voltagePointer is assigned with the address of voltage.Ex: If the input is V 150 5.5, then the output is:Product category: VOperational limit: 150 degrees at 5.5 volts.67891011121314151617181920}char category;int heat;double voltage;*Your code goes here */cin>> category;cin >> heat;cin>> voltage;cout << "Product category:cout << "Operational limit:return 0;<< *categoryPointer << endl;<< *heatPointer << degrees at << fixed << setprecision (1) << *vol

In C++, a pointer A pointer is a variable that stores the memory address of an item. In both C and…

Given variables category, heat, and voltage, declare and assign the following pointers: • character pointer categoryPointer is assigned with the address of category. • integer pointer heatPointer is assigned with the address of heat. • double pointer voltagePointer is assigned with the address of voltage. Ex: If the input is V 150 5.5, then the output is: roduct category: V perational limit: 150 degrees at 5.5 volts. 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20} char category; int heat; double voltage; * Your code goes here */ cin >> category; cin >> heat; cin >> voltage; cout << "Product category: " << *categoryPointer << endl; cout << "Operational limit: " << *heatPointer << " degrees at " << fixed <

Given variables category, heat, and voltage, declare and assign the following pointers: • character pointer categoryPointer is assigned with the address of category. • integer pointer heatPointer is assigned with the address of heat. • double pointer voltagePointer is assigned with the address of voltage. Ex: If the input is V 150 5.5, then the output is: roduct category: V perational limit: 150 degrees at 5.5 volts. 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20} char category; int heat; double voltage; * Your code goes here / cin >> category; cin >> heat; cin >> voltage; cout << "Product category: " << categoryPointer << endl; cout << "Operational limit: " << *heatPointer << " degrees at " << fixed <

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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This lab will exercise your understanding of some of the concepts covered in Chapter 14: pointers and linked lists 1. Declare an integer pointer variable intPointer. Initialize it to point to an int variable named someInt. Assign the value 451 to someInt and output (cout) the variable someInt and output (cout) the value pointed to by intPointer. Write an assignment statement that indirectly stores 900 into the value pointed to by intPointer. Output (cout) the value pointed to by intPointer and output (cout) the variable someInt, 2. Declare a pointer variable charArrPointer and initialize it to point to the first element of a three-element char array named initials. Write assignment statements to store 'A', 'E', and 'W' into the first three elements of the array POINTED to by charArrPointer. Do NOT store any values directly into the array named initials. 3. Output (cout) the data in array charArrPointer and the data in array initials. 4. Copy the following code into your program above…
Given variables category, heat, and voltage, declare and assign the following pointers: character pointer categoryPointer is assigned with the address of category. integer pointer heatPointer is assigned with the address of heat. double pointer voltagePointer is assigned with the address of voltage. Ex: If the input is C 355 3.5, then the output is: Product category: COperational limit: 355 degrees at 3.5 volts. #include <iostream>#include <iomanip>using namespace std; int main() { char category; int heat; double voltage; /* Your code goes here */ cin >> category; cin >> heat; cin >> voltage; cout << "Product category: " << *categoryPointer << endl; cout << "Operational limit: " << *heatPointer << " degrees at " << fixed << setprecision(1) << *voltagePointer << " volts." << endl; return 0;}
1: This program demonstrates the use of pointers. What is the output of this program? Assume we know that the initial address of x is 0012FF44. #include <iostream> using namespace std; int main() { int x=25; int *ptr; // pointer ptr=&x; cout<<x<<endl; cout<<*ptr<<endl; cout<<ptr<<endl; //Now we assign 100 to x *ptr=100; cout<<endl; cout<<"Now we assign 100 to x:"<<endl; cout<<x<<endl; cout<<*ptr<<endl; cout<<ptr<<endl; return 0; } Write down the output:
What is a variable pointer? What follows? It is a variable array. Why are pointers and dynamic arrays problematic?
(a) Determine whether the following variable declaration is valid int INT; A Valid B Invalid (b) Determine whether the following variable declaration is valid. int *ptr; A Valid B Invalid (c) Which of the following statement about pointer is TRUE? A. A pointer variable is a variable used tostore an address B.A pointer holds the data, rather thanwhere to find the data C.The unary operator & is used to find anobject's value D.The unary operator * is used to find an object's address
A pointer variable is what? Then what? A dynamic array is a What's the deal with dynamic arrays and pointers?
Write a paper that summarizes the chapter (or an online resource) that may help you understand the concept of pointers. Include the following topics in the paper. Include illustrations either from the book, or an online source or your own illustration. Come up with an introduction Pointer Variable Declarations and Initialization Pointer Operators Pass-by-Reference with Pointers Built-In Arrays Using const with Pointers sizeof Operator Pointer Expressions and Pointer Arithmetic Relationship Between Pointers and Built-In Arrays Pointer-Based String About Smart Pointers
std::shared_ptr is a class that implements the concept of _____. Select one: a. shared ownership of the pointer it contains b. exclusive ownership of the pointer it contains c. no ownership of the pointer it contains d. partial ownership of the pointer it contains
C++ Pointers must be used to solve the following problem. Write a function createPassword() with no return value to randomly select 8 capital letters from the alphabet. The function receives the address of the first characters of the password string as parameter. Hint: Declare a characters string that contains all the capital letters of the alphabet and use the index values of the characters in the string for random selection of characters, e.g.char alpha [27] = “ABCDEFGHIJKLMNOPQRSTUVWXYZ”;char *pAlpha = alpha; Display the password from the main() function. Write a function replaceVowels() with no return value to replace all the vowels (A, E, I, O, U) that have been selected with a symbol from the list ($ % @ # &). That is, A must be replaced by $, E replaced by %, I mustbe replaced by @, O replaced by #, and U must be replaced by &. The function receives the address of the first characters of the password string as parameter. Display the password agin from the main()…
Why is ‘this’ Pointer is widely used than object pointer?
Pointers are by default passed by value in a function. Group of answer choices True False ================= Given the below code segment, which of the following would allow you to deallocate all memory allocated to the pointer numbers? int* numbers = new int[5]; Group of answer choices delete[] numbers; delete numbers; delete[5] numbers; None of these ========== Consider the following code: int arr[][4] = { {1, 2, 3, 4}, {7, 8, 9, 10} }; cout << arr[1] << endl; What will be the output? Group of answer choices 1 7 Address of 1 Address of 7 Compilation error: Second [] bracket missing with arr
a walking pointer is needed