/HOME  MY COURSES  COMP 3023  ASSESSMENT  PRACTICE EXAM
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Question 3
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Read through the following code then answer the questions below:
#include
#include
using namespace std;
class PracticeExam {
public:
PracticeExam(string grade) : _grade{grade} {
cout << " +" << _grade;
}
~PracticeExam() {
cout << " -" << _grade;
}
private:
friend ostream& operator<<(ostream &out, const PracticeExam &e);
string _grade;
};
ostream& operator<<(ostream &out, const PracticeExam &e) {
return out << ' ' << e._grade;
}
int main()
{
cout << "Grades:";
PracticeExam e1{"HD"};
PracticeExam *e2{&e1};
PracticeExam *e3{new PracticeExam{"C"}};
{
PracticeExam &e4{*e3};
cout << *e2;
PracticeExam e5{"D"};
cout << e4;
}
delete e3;
return 0;
}
Enter the output of the above code in the box below:

/Path: p
Question 4
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Briefly explain why the above code produces the output that it does.
It may help to briefly explain what is happening for each line of code in the 'main' function.
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