Quiz: C++ Classes and Objects

5 questionsNo time limitPass: 60%+10 XP on first pass

Build classes with private data and public methods, constructors (default, parameterised, initializer lists), destructors, the this pointer, const member functions and static members.

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Question 1
What is the default access level of members in a C++ class?
privatepublicprotectedinternal
Question 2
When does a destructor run?
When you call delete onlyAutomatically when the object is destroyed (e.g. it goes out of scope)When the program startsNever automatically

Question 3

What does this print?

#include <iostream>
using namespace std;
class A {
public:
    A() { cout << "A"; }
    ~A() { cout << "a"; }
};
int main() {
    A x;
    { A y; }
    cout << "|";
    return 0;
}

AAaa|AAa|aAaAa|A|Aaa

Question 4
What does a const member function promise?
It returns a constantIt won't modify the object's data membersIt can only be called onceIt is static
Question 5
How many copies of a static data member exist for 100 objects?
10010101