C++ Programming.

The C++ language: references, classes, virtual dispatch, lambdas and casts. Covers 16 sub-skills.

• C++ Programming · 1 of 3

  Range-based for & Initialization

  What does int z{}; give z?

  Ano value at allBthe value zeroCthe value oneDan unset value

• C++ Programming · 2 of 3

  Lambdas & Captures

  A closure that captured a local by reference is returned and then called. What does this program do?

  #include <iostream>#include <functional>std::function<int()> make() { int local = 7; return [&local]() { return local; }; }int main() {  auto f = make();  std::cout << f();}

  Ait reads a zero valueBit reads dead storageCit reads a fresh localDit reads a safe copy

• C++ Programming · 3 of 3

  Inheritance & Virtual Functions

  A developer stores a parent-typed copy in a cache and later downcasts it, and the cast always fails. Why?

  Athe type table was droppedBthe cast needs a reference type hereCthe stored object lost its tailDthe cache holds a null slot