Teach Yourself Borland C++ in 14 Days - portal

Quiz
Up to Your Neck in C++
Day 5, “C++ Class Frameworks and the Visual Component Model”), you will see
that VCL parent objects take the responsibility for deleting their children.
Q Should I create my objects on the stack or on the heap?
A That depends on the object. Large objects should be created on the heap in order
to preserve stack space. Small objects and primitive data types should be created on
the stack for simplicity and speed of execution.
Q What’s the point of having overloaded functions?
A Overloaded functions provide you a means by which you can have several functions
that perform the same basic operation and have the same function name, but take
different parameters. For example, you might have an overloaded function called
DrawObject(). One version might take a Circle class as a parameter, another might
take a Square class as a parameter, and a third could take a class called Polygon as a
parameter. By having three functions with the same name, you avoid the need to
have three different function names.
Q Should I use a lot of inline functions?
A That depends on the function, of course. In general, though, the answer is no.
Inline functions should be reserved for functions that are very small or seldom
used, or where execution speed is critical.
1. What is a pointer?
2. What does it mean to dereference a pointer?
3. What is the return value of operator new?
4. Should instances of classes and structures be passed to functions by reference or by
value?
5. What does the const keyword do?
6. Does the following qualify as an overloaded function? Why or why not?
void MyFunction(int x);
long MyFunction(int x);
7. Which is better to use, a reference or a pointer?
8. What is a class member function?
9. How does the compiler treat an inline function as opposed to a regular function?
10. What, if anything, is wrong with the following code snippet?
char* buff = new char[200];
// later...
delete buff;
93
3