Ace Your C++ Skills 2026 – Rock the ‘Thinking in C++’ Challenge!

Objects stored in Stash and Stack containers must be created on the heap. Stash containers use dynamic memory allocation in order to store objects and they need to be created on heap in order to be used for dynamic memory allocation. Stack containers are also built to use dynamic memory allocation in last in, first out order. Hence, objects in Stack containers must also be created on the heap. The other options mentioned - B, C and D - are incorrect because those concepts are not directly related to properties of objects stored in Stash and Stack containers. Option B states overloaded constructors as a compiler mechanism in object-oriented programming languages, and not needed specifically for Stash and Stack containers. Option C states custom memory management, which is not a requirement for either Stash or Stack containers. Option D mentions default-constructed objects, which are objects without arguments passed into constructors, and it is not a property of objects