[SOLVED] CECS282 - Lab 6

Description

Reading

Reading from C++ How to Program:

1. Chapter 10.9
2. Chapter 10.10, 10.10.1, 10.12, 10.15

Assignment

1. Consider the following short main function, using your BoardPosition class from Homework 4:

int main() {

BoardPosition a {5, 4}; if (true) {

BoardPosition b {2, 1};

BoardPosition *c = new BoardPosition{4, 5};

unique_ptr<BoardPosition> up = std::make_unique<BoardPosition>(9, 9);

}

}

• How many BoardPosition objects are constructed in this example?
• How many BoardPosition objects are destructed by the time main ends, but before the operating system closes the program?
• Is c a BoardPosition object? Why or why not?

2. Answer True or False to the following questions:
   • You can declare a pointer to point to a value on the heap.
   • You can declare a pointer to point to a value on the stack.
   • It is safe to delete a pointer when it points to a value on the heap.
   • It is safe to delete a pointer when it points to a value on the stack.
   • A function can determine at run-time whether a pointer points to a stack or heap value.
   • It is safe to blindly delete any pointer.
3. In your own words, describe the di erences between the three places const can appear in a function prototype. You can refer to the following prototype as an example: const Deck& Deck::DoSomething(const Deck &parameter) const;
4. Answer True or False to the following questions:
   • You must declare a destructor for every class you make.
   • If you do not de ne a copy constructor, the compiler will automatically de ne one for you.
   • A compiler-de ned copy constructor knows how to perform deep-copies of member variables allocated on the heap.
   • Managing memory on the heap is super easy and there is never a reason to program in any language that does garbage collection.