15. The delete keyword tells the compiler that the address pointed to by the pointer will no longer be used. What do you think will happen if we access a deleted memory location? This is called dangling reference. Place a check (✔) beside your answer. delete city_ptr; std::cout << "City name after deletion: *city_ptr << "\n"; a. The program may crash if another program used the deleted memory address. << b. The system guarantees there will be no errors. c. The memory address remains reserved for our program so no other program can use it (wasted resource). 16. If we forget to call delete on a memory address, it will remain reserved in the heap. What is a potential issue when a memory address is not deleted? See the code below for an example. This is called a memory leak. Place a check (✔) beside your answer. for (int i = std::string* temp std::string ("garbage"); 0; i<10; i++) { = new 11 } a. The program may crash if another program used the memory address. b. The system guarantees there will be no errors. c. The memory address remains reserved for our program so no other program can use it (wasted resource).

15. The delete keyword tells the compiler that the address pointed to by the pointer will no longer be used. What do you think will happen if we access a deleted memory location? This is called dangling reference. Place a check (✔) beside your answer. delete city_ptr; std::cout << "City name after deletion: city_ptr << "\n"; a. The program may crash if another program used the deleted memory address. << b. The system guarantees there will be no errors. c. The memory address remains reserved for our program so no other program can use it (wasted resource). 16. If we forget to call delete on a memory address, it will remain reserved in the heap. What is a potential issue when a memory address is not deleted? See the code below for an example. This is called a memory leak. Place a check (✔) beside your answer. for (int i = std::string temp std::string ("garbage"); 0; i<10; i++) { = new 11 } a. The program may crash if another program used the memory address. b. The system guarantees there will be no errors. c. The memory address remains reserved for our program so no other program can use it (wasted resource).

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter8: I/o Streams And Data Files

Section: Chapter Questions

Problem 8PP: (Data processing) A bank’s customer records are to be stored in a file and read into a set of arrays...

See similar textbooks

Similar questions

(Data processing) A bank’s customer records are to be stored in a file and read into a set of arrays so that a customer’s record can be accessed randomly by account number. Create the file by entering five customer records, with each record consisting of an integer account number (starting with account number 1000), a first name (maximum of 10 characters), a last name (maximum of 15 characters), and a double-precision number for the account balance. After the file is created, write a C++ program that requests a user-input account number and displays the corresponding name and account balance from the file.
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;}
(Pointers + Dynamic 1D Arrays) c++ program please use only pointers and dynamic 1D array and please don't use recursion and vector or other
Please continue tthe code below --- #include <stdio.h> struct Employee { // declaring the members of the structure char emp_full_name[30]; int pos; float rate_per_hour; int hour_worked; float deduction; float gross_week_pay; float net_week_pay; }; int main() { struct Employee var; // declare the Employee variable struct Employee *ptr; // create a pointer variable (*ptr) ptr = &var ;// assigning the address of var to pointer type variable return 0; }
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
Language: C++ Create a class called publication that stores the title (char array) and price (float) of a publication. From this class derive two classes: book, which adds a page count (int) and tape, which adds a playing time in minutes (float). Each of the three classes should have a getdata() function to get its data from the user using input from the keyboard and a putdata() function to display the data.Write a main function that creates an array of pointers to publication. In a loop, ask the user for data about a particular type of book or tape to hold data. Put the pointer to the object in the array. When the user has finished entering data for all the books and tapes, display the resulting data for all the books and tapes entered, using a for loop and a single statement such as: pubarr[j] -> putdata(); To display the data from each object in the array.
If integer pointer aPtr is to point at a data item whose value may not change it must be declared as ... A. const int * const aPtr; B. int *aPtr; C. int *const aPtr; D. const int *aPtr;
Language: JAVA Script write a function 'keyValueDuplicates (obj) that takes an object as an argument and returns an array containing all keys that are also values in that object. Examples: obj1 = { orange: "juice", apple: "sauce", sauce: "pan" }; console.log(keyValueDuplicates (obj1)); // ["sauce"] obj2 = { big: "foot", foot: "ball", ball: "boy", boy: "scout"};console.log(keyValueDuplicates(obj2)); // ["foot", "ball", "boy"] obj3 = { pizza: "pie", apple: "pie" pumpkin: "pie"); console.log(keyValueDuplicates (obj3)); // [] *******************************************************************/function keyValueDuplicates (obj) { | // Your code here } /*****DO NOT MODIFY ANYTHING UNDER THIS LINE*********/ try { | module.exports = keyValueDuplicates; } catch (e) { | module.exports = null;}
C++ Write a function that accepts an array and its size as arguments, creates a new array that is a copy of the argument array, and returns a pointer to the new array. Display the array in main(). The function will work as follows: Accept an array and its size as arguments. Dynamically allocate a new array that is the same size as the argument array. Copy the elements of the argument array to the new array. Return a new pointer to the new array. // This program uses a function to duplicate// an int array of any size.#include <iostream>using namespace std;// Function prototype_________________________________________________int main(){ // Define constants for the array sizes. const int SIZE1 = 5, SIZE2 = 7, SIZE3 = 10; // Define three arrays of different sizes. int array1[SIZE1] = { 100, 200, 300, 400, 500 }; int array2[SIZE2] = { 10, 20, 30, 40, 50, 60, 70 }; int array3[SIZE3] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }; // Define three pointers for the duplicate arrays. int *dup1 =…
38. To pass a scalar variable by reference in C++, you need to include the ____ operator before the formal parameter’s name in the receiving function’s header. a. & c. $ b. * d. @ 42. A simple, or ____ variable, is one that is unrelated to any other variable in memory. a. scalar b. vector c. independent d. dependent 43. You may use an assignment statement or the ____ operator to enter data into an array element. a. comparison b. arithmetic c. extraction d. insertion 44. Each of the ____ (variables) in an array has the same data type. a.elements b.objects c.structures d.subscripts
Instructions Write a program in C++ that uses a two-dimensional array to store the highest and lowest temperatures for each month of the year. The program should output the average high, average low, and the highest and lowest temperatures for the year. Your program must consist of the following functions: Function getData: This function reads and stores data in the two-dimensional array. Function averageHigh: This function calculates and returns the average high temperature for the year. Function averageLow: This function calculates and returns the average low temperature for the year. Function indexHighTemp: This function returns the index of the highest high temperature in the array. Function indexLowTemp: This function returns the index of the lowest low temperature in the array. These functions must all have the appropriate parameters. An example of the program is shown below: Enter high temperature for each month 60 68 72 72 73 76 80 81 75 72 67 66 Enter low temperature for…
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()…