Question

Whenever you allocate an object with new, you need to deallocate it using delete to avoid a memory leak. It's important when you do so that you only deallocate exactly once - deallocating an object zero times causes a memory leak and deallocating an object multiple times usually causes the program to crash (deallocating memory twice is called double free and can lead to vulnerabilities in your code). 1 void MemoryLeaks() 2{ 3 Animal* dog = new Animal("Dog"); 4 Animal* cat = new Animal("Cat"); 5 Animal* rabbit = new Animal("Rabbit"); 6 dog = cat; 7 cat = rabbit; 8 rabbit = dog; 9 delete cat; 10 cat = nullptr; 11 delete rabbit; 12 delete dog; dog = nullptr; 14} 13 Identify the line number that leads to a memory leak within the code listing above. 4 a. b. 5 c. 7 0.6

Answer 1

Answer would be 5

as without deleting dog,cat,rabbit we are assigning new pointers that will cause a total of 3 memory leaks and 2 memory leaks for cat=nullptr and dog=nullptr,that is bring back the two pointers.

so total memory leaks will be 5.