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  1. // "New" means new compared to previous level
  2. #include <iostream>
  3. using namespace std;
  4.  
  5. class SubstituteTeacher {
  6.    public:
  7.       SubstituteTeacher();
  8.       ~SubstituteTeacher();
  9.       SubstituteTeacher& operator=(const SubstituteTeacher& objToCopy);
  10.  
  11.       // New: grade pointer member in SubstituteTeacher
  12.       void SetSubjectAndGrade(string setSubject, int setGrade) {
  13.          *grade = setGrade;
  14.          *subject = setSubject;
  15.       }
  16.  
  17.       void Print();
  18.    private:
  19.       int* grade;
  20.       string* subject;
  21. };
  22.  
  23. SubstituteTeacher::SubstituteTeacher() {
  24.    subject = new string;
  25.    *subject = "none";
  26.    grade = new int;
  27.    *grade = 0;
  28. }
  29.  
  30. SubstituteTeacher::~SubstituteTeacher() {
  31.    delete grade;
  32.    delete subject;
  33. }
  34.  
  35. // New: assignment operator also copies grade member
  36. SubstituteTeacher& SubstituteTeacher::operator=(const SubstituteTeacher& objToCopy) {
  37.    if (this != &objToCopy) {
  38.       delete subject;
  39.       subject = new string;
  40.       *subject = *(objToCopy.subject);
  41.  
  42.       delete grade;
  43.       grade = new int;
  44.       *grade = *(objToCopy.grade);
  45.    }
  46.  
  47.    return *this;
  48. }
  49.  
  50. // New: Print function
  51. void SubstituteTeacher::Print() {
  52.    cout << *grade << ": " << *subject << endl;
  53. }
  54.  
  55. int main() {
  56.    SubstituteTeacher msWong;
  57.    SubstituteTeacher mrPark;
  58.    SubstituteTeacher mrDorf;
  59.  
  60.    msWong.SetSubjectAndGrade("Math", 1);
  61.    mrPark.SetSubjectAndGrade("History", 5);
  62.    mrDorf.SetSubjectAndGrade("Art", 3);
  63.  
  64.    mrPark = msWong;
  65.    msWong = mrDorf;
  66.  
  67.    mrPark.Print();
  68.    msWong.Print();
  69.  
  70.    return 0;
  71. }	
  72.  
Success #stdin #stdout 0s 5280KB
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1: Math
3: Art
https://ideone.com/JSgJ6T
language:
C++ (gcc 8.3)
created:
11 days ago
visibility:
public

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