Lecture

Enum in C++

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Description

This lecture introduces the concept of enum in C++, which allows defining a set of constant symbols. Enum is suggested as an alternative to constexpr, particularly suitable for sets of symbols corresponding to integer values. The lecture explains the syntax of enum declarations, the conventions for naming symbols, and the restrictions on symbol redefinition. It also covers the default integer values associated with enum symbols, the option to redefine these values, and the usage of enums in switch statements. Additionally, the lecture discusses the usage of define for defining constants, highlighting its legacy from the C language and its role in defining symbolic constants with specific values.

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Related concepts (26)

Constant (computer programming)

In computer programming, a constant is a value that should not be altered by the program during normal execution, i.e., the value is constant. When associated with an identifier, a constant is said to be "named," although the terms "constant" and "named constant" are often used interchangeably. This is contrasted with a variable, which is an identifier with a value that can be changed during normal execution, i.e., the value is variable.

C++

C++ ('si:_plVs_plVs, pronounced "C plus plus" and sometimes abbreviated as CPP) is a high-level, general-purpose programming language created by Danish computer scientist Bjarne Stroustrup. First released in 1985 as an extension of the C programming language, it has since expanded significantly over time; modern C++ currently has object-oriented, generic, and functional features, in addition to facilities for low-level memory manipulation.

Naming convention (programming)

In computer programming, a naming convention is a set of rules for choosing the character sequence to be used for identifiers which denote variables, types, functions, and other entities in source code and documentation. Reasons for using a naming convention (as opposed to allowing programmers to choose any character sequence) include the following: To reduce the effort needed to read and understand source code; To enable code reviews to focus on issues more important than syntax and naming standards.

Switch statement

In computer programming languages, a switch statement is a type of selection control mechanism used to allow the value of a variable or expression to change the control flow of program execution via search and map. Switch statements function somewhat similarly to the if statement used in programming languages like C/C++, C#, Visual Basic .NET, Java and exists in most high-level imperative programming languages such as Pascal, Ada, C/C++, C#, Visual Basic .NET, Java, and in many other types of language, using such keywords as switch, case, select or inspect.

Syntax highlighting

Syntax highlighting is a feature of text editors that is used for programming, scripting, or markup languages, such as HTML. The feature displays text, especially source code, in different colours and fonts according to the category of terms. This feature facilitates writing in a structured language such as a programming language or a markup language as both structures and syntax errors are visually distinct.

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Related concepts (26)

Constant (computer programming)

C++

Naming convention (programming)

Switch statement

Syntax highlighting