Lecture

Default Arguments and Function Overloading

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Description

This lecture covers the concept of default arguments in function prototypes, where values can be provided for parameters, and the function can be called without providing arguments for those parameters. It also explains the rules for specifying default arguments and the order in which they should appear. Additionally, the lecture introduces function overloading in C++, allowing the definition of multiple functions with the same name but different parameter lists. This mechanism is useful for writing functions sensitive to the type of their arguments, enabling the implementation of similar operations on different types of entities.

Official source

Ontological neighbourhood

Theoretical computer science

Programming language theory: High-level programming languages

Related concepts (15)

Function (computer programming)

In computer programming, a function or subroutine is a sequence of program instructions that performs a specific task, packaged as a unit. This unit can then be used in programs wherever that particular task should be performed. Functions may be defined within programs, or separately in libraries that can be used by many programs. In different programming languages, a function may be called a routine, subprogram, subroutine, or procedure; in object-oriented programming (OOP), it may be called a method.

Function overloading

In some programming languages, function overloading or method overloading is the ability to create multiple functions of the same name with different implementations. Calls to an overloaded function will run a specific implementation of that function appropriate to the context of the call, allowing one function call to perform different tasks depending on context. For example, and are overloaded functions. To call the latter, an object must be passed as a parameter, whereas the former does not require a parameter, and is called with an empty parameter field.

Operator overloading

In computer programming, operator overloading, sometimes termed operator ad hoc polymorphism, is a specific case of polymorphism, where different operators have different implementations depending on their arguments. Operator overloading is generally defined by a programming language, a programmer, or both. Operator overloading is syntactic sugar, and is used because it allows programming using notation nearer to the target domain and allows user-defined types a similar level of syntactic support as types built into a language.

Parameter (computer programming)

In computer programming, a parameter or a formal argument is a special kind of variable used in a subroutine to refer to one of the pieces of data provided as input to the subroutine. These pieces of data are the values of the arguments (often called actual arguments or actual parameters) with which the subroutine is going to be called/invoked. An ordered list of parameters is usually included in the definition of a subroutine, so that, each time the subroutine is called, its arguments for that call are evaluated, and the resulting values can be assigned to the corresponding parameters.

Method (computer programming)

A method in object-oriented programming (OOP) is a procedure associated with an object, and generally also a message. An object consists of state data and behavior; these compose an interface, which specifies how the object may be used. A method is a behavior of an object parametrized by a user. Data is represented as properties of the object, and behaviors are represented as methods. For example, a Window object could have methods such as open and close, while its state (whether it is open or closed at any given point in time) would be a property.

Related lectures (46)

Functions in C: Key Concepts and Examples

Explains the essential concepts of functions in C programming, including definitions, prototypes, and argument passing techniques.

Introduction to Object-Oriented Programming in C++

Introduces overloading, shadowing, and overriding in C++, with examples and the use of 'override' and 'final' keywords.

Introduction to Operator Overloading in C++

Covers the importance and practical applications of operator overloading in C++, using examples with complex numbers.

Object-Oriented Programming in C++

Covers the basics of object-oriented programming in C++, focusing on modeling a watch problem and implementing the corresponding code.

Functions: Reusability and Error Reduction