Object-Oriented Programming Using C++ I

Study Notes

Inline functions can enhance program speed by substituting function calls with the function's code directly at the point of invocation, eliminating overhead associated with function calls.
When inline functions are used, the compiler replaces the function call with the actual function body during compilation, avoiding the standard function call mechanism. This reduces the overhead associated with function calls like pushing parameters onto the stack, transferring control to the function, and returning to the caller. The result is potentially faster execution, particularly for small functions that are frequently called.
If an inline function has a return statement without returning any value, the behavior is undefined. The compiler might issue a warning, or the program might behave unpredictably, leading to errors or crashes.

Deadlock problems are not directly associated with friend functions. Deadlock typically occurs when multiple threads or processes are waiting for each other to release resources that they need, resulting in a standstill. Friend functions might access private members of a class, but their potential for deadlock isn't inherent to their nature.

Static member functions are associated with the class itself rather than with specific objects of the class. They can be called without creating an instance of the class.

Constructors are special member functions that are automatically invoked when an object of a class is created. They are responsible for initializing the object's data members. Regular member functions can be called manually, but constructors are automatically called during object creation.

Only one destructor can exist within a class definition, and it cannot be declared as static.
Constructors are designed to initialize the data members of an object, while destructors are used to clean up resources held by the object, such as closing files or releasing memory.
They are opposites, one for object creation and the other for destruction.