They are objects corresponding to a program’s default input and output files.

Contrast procedural and object oriented programming.

The procedural paradigm performs computation through a step-by-step manipulation of data items. Solving PROBLEMS this WAY is akin to writing a recipe. ie: All the ingredients (data items) are defined. Next a series of enumerated steps (statements) are defined to transform the raw ingredients into a finished meal.

The object oriented model, in contrast, combines related data and procedural information into a SINGLE package called an object. Objects are meant to represent logically separate entities (like real world objects). Objects are grouped TOGETHER (and defined by) classes. (This is analogous to user defined data types in procedural languages.) Classes may pass-on their “makeup” to classes derived from them. In this way, Objects that are of a similar yet different nature need not be defined from scratch.

Computation occurs though the intercommunication of objects. Programming this way is like writing a play. First the CHARACTERS are defined with their attributes and personalities. Next the dialog is written so that the personalities interact. The sum total constitutes a drama.

They are objects corresponding to a program’s default input and output files.

Contrast procedural and object oriented programming.

The procedural paradigm performs computation through a step-by-step manipulation of data items. Solving problems this way is akin to writing a recipe. ie: All the ingredients (data items) are defined. Next a series of enumerated steps (statements) are defined to transform the raw ingredients into a finished meal.

The object oriented model, in contrast, combines related data and procedural information into a single package called an object. Objects are meant to represent logically separate entities (like real world objects). Objects are grouped together (and defined by) classes. (This is analogous to user defined data types in procedural languages.) Classes may pass-on their “makeup” to classes derived from them. In this way, Objects that are of a similar yet different nature need not be defined from scratch.

Computation occurs though the intercommunication of objects. Programming this way is like writing a play. First the characters are defined with their attributes and personalities. Next the dialog is written so that the personalities interact. The sum total constitutes a drama.