CSCI 1300 - Lecture Notes

10/14/97

Administrative Stuff

Results of Quiz #2

Readings: 11.1 and 11.2 (classes), 8.1 and 8.2 (files)

Classes

Constructors and destructors

Each class may have a special function called a constructor that: is called implicitly at the time that a variable of that type is declared. is usually used to initialize member variables.: is called implicitly at the time that a variable of that type is declared.
is usually used to initialize member variables.

The constructor must have the same name as the class

Each class may have a special function called a destructor that is called at the time that an object is destroyed.

Operators

It is possible to define operators for a class.

Operators are defined just like functions The first parameter is implicitly the object itself. It doesn't need to be declared. All C++ operators can be defined for a class (+, -, =, ==, etc.). See the example for details.: The first parameter is implicitly the object itself. It doesn't need to be declared.
All C++ operators can be defined for a class (+, -, =, ==, etc.).
See the example for details.

Overloading

Any function or operator in C++ can be defined more than once as long as each definition has a different parameter list.

A function defined more than once is said to be overloaded.

The correct function to use is chosen based on the parameters passed in the function call.