Declarations–a declaration introduces a name into a scope. Generally speaking, a scope is either an entire ‘.cpp’ file (source file) or anything in code delimited by {} (braces), be it a function, a loop within a function, or even an arbitrarily placed block of {} within a function. A name introduced, is visible within the scope from the point at which it is declared to the end of that scope. A declaration merely tells the compiler how to use something, it does not actually create anything. Prototypes–a prototype is just another name for a declaration of a function. Definitions–a definition fully specifies an entity. Definitions are where the actual creation…

What’s the difference between Header files & Source files? Basically, header files are #included and not compiled, whereas source files are compiled and not #included. So do not compile ‘.h‘ files, and do not #include ‘.cpp‘ Source files. Also, do not #include the same .h file twice. This will lead to an error. Extensions All files are fundamentally the same in that they’re all text file, however different kinds of files should have different extensions: Header files should use a .h extension (.h/.hpp/.hxx). Which particular one of these you use doesn’t matter. C source files should use .c (.c only). (But that’s for ‘C’ language.)

Class Methods Methods, or member functions, are functions that belong to the class. There are two ways to define functions that belong to a class, or member functions, or methods. Inside the class definition Outside the class definition (including from a different file like a source file) To define a member function outside the class definition, you have to declare it inside the class (with a function prototype), and then define it outside of the class. This is done by specifying the name of the class, followed by the scope resolution operator ( :: ), followed by the name of the function. Separating Interface from Implementation *Note: It’s better software…

C++ Classes & Objects Classes and Objects are the two main aspects of OOP. Ex: Class Objects Apple Fruit Banana Mango or: Class Object Volvo Car Audi Toyota A class is a template for objects, and an object is an instance of a class. When the individual objects are created they inherit all the variables and functions from the class. Everything in C++ is associated with classes & objects, along with its attributes (data members–such as “weight” & “color”), and methods (member functions–such as “drive” & “brake” for a “car”). Attributes & methods are basically variables & functions that belong to the class. These are often referred to as “class…