Coding With Joseph

Select topics to narrow your question pool, then enable Random to jump to a random question matching your filters.

C++ Quiz #37

Non-Virtual Destructor Leak

mediumPolymorphism

This code has a subtle bug when delete base runs. What is the issue?

📄 Code

1#include <iostream>
2using namespace std;
3 
4class Base {
5public:
6    ~Base() {
7        cout << "Base destroyed" << endl;
8    }
9};
10 
11class Derived : public Base {
12    int* data;
13public:
14    Derived() { data = new int[100]; }
15    ~Derived() {
16        delete[] data;
17        cout << "Derived destroyed" << endl;
18    }
19};
20 
21int main() {
22    Base* base = new Derived();
23    delete base;
24    return 0;
25}