The Fission Theory: This theory proposes that the Moon was once part of the Earth and somehow separated from the Earth early in the history of the solar system.
This provides modular approach to programming. Classes. A class is a concept used in object oriented programming languages such as C++, PHP, and JAVA etc. Apart from holding data, a class is also used to hold functions. An object is an instant of a class. In case of variables, the type is the class whereas the variable is the object.
active oldest votes. up vote 85 down vote. Private is a modifier than gives the scope of the class, sub, or function. A sub and a function are both subroutines, or sections of code that can be called in the program. The difference between them is that a function has a return value and a sub does not.A class is a group of code that can include subs, functions, and other stuff. share | improve this answer.he difference between them is that a function has a return value and a sub does not. A class is a group of code that can include subs, functions, and other stuff.