C++ Quiz

Pass with 7 / 10 to unlock your certificate.

1. 1. Which container provides O(1) average lookup by key?

   std::mapstd::unordered_mapstd::vectorstd::list

2. 2. What does RAII stand for?

   Run-As-If-InlinedResource Acquisition Is InitialisationRecursive Allocation In InheritanceReference Assignment Initial Index

3. 3. Which smart pointer enforces unique ownership?

   shared_ptrweak_ptrunique_ptrauto_ptr

4. 4. What does `override` keyword help with?

   Marks a function as inlineCatches mistakes in virtual overridingPrevents inheritanceForces overloading

5. 5. Which is move semantics syntax?

   std::move(x)&&xx.move()move x

6. 6. What's the default access specifier in a struct?

   privatepublicprotectedinternal

7. 7. What is name mangling?

   Encoding function signatures for the linkerRenaming variables at runtimeA compiler optimisationRemoving namespaces

8. 8. Which header provides std::vector?

   <array><vector><list><container>

9. 9. What does `constexpr` allow?

   Runtime evaluation onlyCompile-time evaluationInheritance controlMemory alignment

10. 10. Which is true about references in C++?

    Can be reseatedCan be nullMust be initialisedAlways take more memory than pointers