Programming Fundamentals 2 Quiz 2
What is an assignment operator
An assignment operator copies information from one object to another in a deep format where they have the same information but not the same addresses
What is the purpose of template <typename T> in a class declaration
Establishes that the class is gonna be a template and what variable is going to be used
What is a memory leak
A memory leak is when access to memory on the heap or free store has been lost and cannot be accessed
What is a copy constructor
A copy constructor is the constructor which take same class object reference as the parameter. It gets automatically invoked as soon as the object is initialized with another object of the same class at the time of its creation.
How to protect a class from modifying this
Add const after the method parameters
How to create a const variable
Add const before the variable type
Breakpoints
Can choose a spot in the program to stop the program from running and see what is going on in its memory. Done by clicking on the side of a line of code or clicking F9 on the line you're on in Visual Studio
What does the delete key word do
De-allocates a block of memory from the heap of free store
Step over
Is going to go to the next line of code in the current function
Where does "new" memory get allocated
New memory gets allocated in the free store or the heap
Step out
Step out of the current function into what called it
Step Into
Steps into the current function on that line of code if there is one
What is the purpose of a template
Templates are used when the data being inputted is not going to be of the same data type so it has to be dealt with in a general way
What are the Big Three
The big three states that when creating either an assignment operator, copy constructor, then the other two need to be used aswell.
What does the new keyword do
The new keyword allocates dynamic memory to the heap or free store
What is the rule of three
The rule of three states that when creating either an assignment operator, copy constructor, then the other two need to be used aswell.
What is the purpose of using brackets with new and delete
Using brackets shows it is dynamic memory that is going to be allocated or deallocated from the heap or free store
Where do variables in functions get declared
Variables in functions get declared in the stack
What is the stack overflow error and how can it happen
When a program uses more memory than the stack has available
How to view variables locally
You can view variables locally by opening up the autos window when debugging by doing Ctrl+Alt+V A
What is a constant pointer
const int* ptr; declares ptr a pointer to const int type. You can modify ptr itself but the object pointed to by ptr shall not be modified. int * const ptr; declares ptr a const pointer to int type. You are not allowed to modify ptr but the object pointed to by ptr.
What is a destructor
fFnction (much like constructor) which is called when the object is explicitly deleted by code, or when the object passes out of scope, which can happen when the program exits a function; has the same name as the class, but with a tilde prefix.
