What do you mean by compiler directives?

A statement written in the source code of a program that lets the programmer instruct the compiler to perform a specific operation within the compilation phase. A compiler directive is often required when the same source code is compiled on two different hardware platforms.

What is a compiler directive C++?

Advertisements. The preprocessors are the directives, which give instructions to the compiler to preprocess the information before actual compilation starts. All preprocessor directives begin with #, and only white-space characters may appear before a preprocessor directive on a line.

What is compiler directives in Verilog?

A compiler directive may be used to control the compilation of a Verilog description. A directive is effective from the point at which it is declared to the point at which another directive overrides it, even across file boundaries.

What is compiler directive in asp net?

ASP.NET directives are instructions to specify optional settings, such as registering a custom control and page language. These settings describe how the web forms (. aspx) or user controls (. ascx) pages are processed by the . Net framework.

What are Preprocessors explain?

In computer science, a preprocessor (or precompiler) is a program that processes its input data to produce output that is used as input to another program. The output is said to be a preprocessed form of the input data, which is often used by some subsequent programs like compilers.

What are Python directives?

A directive statement instructs the Python interpreter to process a source file in a different way; the specific details of that processing depend on the directive name. The optional atom is typically interpreted when the source code is processed; details of that interpretation depend on the directive.

What are compiler directives in C?

In computer programming, a directive or pragma (from “pragmatic”) is a language construct that specifies how a compiler (or other translator) should process its input. Directives are not part of the grammar of a programming language, and may vary from compiler to compiler.

What is preprocessing directive in C?

The preprocessor will process directives that are inserted into the C source code. These directives allow additional actions to be taken on the C source code before it is compiled into object code. Directives are not part of the C language itself.

What is Ifndef in UVM?

The keyword `ifndef simply tells the compiler to include the piece of code until the next `else or `endif if the given macro called FLAG is not defined using a `define directive.

What is a directive in C#?

C# preprocessor directives are the commands for the compiler that affects the compilation process. These commands specifies which sections of the code to compile or how to handle specific errors and warnings.

What is a compiler and interpreter?

Compliers and interpreters are programs that help convert the high level language (Source Code) into machine codes to be understood by the computers. Compiler scans the entire program and translates the whole of it into machine code at once. An interpreter takes very less time to analyze the source code.

What are the purpose of using directives?

At the core, a directive is a function that executes whenever the Angular compiler finds it in the DOM. Angular directives are used to extend the power of the HTML by giving it new syntax. Each directive has a name — either one from the Angular predefined like ng-repeat , or a custom one which can be called anything.