Teach Yourself Borland C++ in 14 Days - portal

NOTE
Up to Your Neck in C++
int Airplane::GetSpeed()
{
return speed; // speed is a class member variable
}
In this case, the scope-resolution operator tells the compiler that the GetSpeed() function is
a member of the Airplane class. I’ll talk more about class member functions when I discuss
classes tomorrow.
Inline Functions
Tradition has it that class member function names begin with uppercase
letters. There is no hard and fast rule about this, but you will find
that most C++ programs follow this tradition. As a further note, I am
not a fan of the underscore character in function names. For example, I
much prefer the function name GetVideoRect() over the name
get_video_rect(). Regardless of what naming convention you use for
your functions, be consistent and use the same naming convention
throughout your programs.
Normally a function only appears in the executable file once. Each section of code that uses
the function calls the function. This means that program execution jumps from the point
of the function call to the point in the program where the function resides. The statements
in the function are executed, and then the function returns. When the function returns,
program execution jumps back to the statement following the function call.
An inline function, as its name implies, is placed inline in the compiled code wherever
a call to that function occurs.
NEW TERM
NOTE
Inline functions are declared like regular functions but are defined with the inline keyword.
Each time the compiler encounters a call to an inline function in the source code, it places
a separate copy of the function’s code in the executable program at that point. Inline
functions execute quickly because no actual function call takes place (the code is already
inlined in the program).
Inline functions should be reserved for functions that are very small or
for those that need to be executed very quickly. Large functions or
those that are called from many places in your program should not be
inlined because your executable file will be larger as a result.
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