Programming and Problem Solving With C++
Programming and Problem Solving With C++
6th Edition
ISBN: 9781449694265
Author: Nell Dale
Publisher: Jones & Bartlett Learning
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Chapter 3, Problem 4CSF
Program Plan Intro

To rewrite the program so as to calculate the 1+monthlyInterest once in the given program and justify which version of the program is better.

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#include <stdio.h> #include <stdlib.h> #include <unistd.h>   int global_var = 42; //   int* function(int *a) { int local_var = 10; // *a = *a + local_var; int *local_pointer = (int *)malloc (size of (int) * 64); // Allocated array with 64 integers return local_pinter; }   int main() {      int local_main[1024*1024*1024*1024*1024] = {0}; // initialize an array and set all items as 0      int *heap_var = (int *)malloc(size of(int) * 16); // Allocated array with 16 integers     *heap_var = 100; function(heap_var); printf(“the value is %d\n”, *heap_var);      free(heap_var); // release the memory      return 0; }  1) draw the memory layout of the created process, which should include text, data, heap and stack [2 marks].   2) Indicate which section the variables are allocated [2 marks]: global_var local_var, local_pointer local_main heap_var, *heap_var (the data that it points to)   3) Does this code have memory leaking (heap memory is not released)? [2 marks] 4) The…
8. List three HDD scheduling algorithms. [2 marks] 9. True or False? The NVM has the same scheduling algorithms with HDD. Explain why? [2 marks] 10. Why the modern mouses use polling to detect movements instead of interrupts? [2 marks] 11. What is thrashing? How does it happen? [2 marks] 12. Given a reference string of page numbers 7, 0, 1, 2, 0, 3, 0, 4, 2, 3, 0, 3, 0, 3, 2, 1, 2, 0, 1, 7, 0, 1 and 4 frames show how the page replacement algorithms work, and how many page faults? [6 marks], 1) FIFO algorithm? [2 marks] 2) Optimal algorithm? [2 marks] 3) LRU algorithm? [2 marks] 13. List at least three file systems that you know. [2 marks] 14. In C programming, how the seek to a specific position in the file by offset? [2 marks]
A Personal Address Book application program allows the user to add, delete, search, save, and load contact information. The program separates the user interface (command-line) and the internal processing subsystem. The internal processing system consists of the following classes: • • Contact Manager (responsible for add and delete operations) Contact Finder (responsible for the search operation) pataManager (responsible for save and load operations) a. What design pattern can be used to implement the user interface? Explain your answer using a class diagram for the entire system. b. Draw a UML sequence diagram to show the behavioral view of the Personal Address Book program, demonstrating what happens when a user enters new contact information.
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