Which are compiler directives?

A compiler directive is a statement that causes the compiler to take a specific action during compilation. Conditional compilation provides a way of including or omitting selected lines of source code depending on the values of literals specified by the DEFINE directive.

What are compiler directives provide examples?

A compiler directive is often required when the same source code is compiled on two different hardware platforms. For example, the code might be compiled and tested on Windows but compiled and run on Linux. In such cases, a few commands in the code may be different, and the #define and #if directives accomplish this.

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 the syntax of compiler directives?

Before a C program is compiled in a compiler, source code is processed by a program called preprocessor….C Preprocessor directives:

Preprocessor Syntax/Description
Conditional compilation Syntax: #ifdef, #endif, #if, #else, #ifndef Set of commands are included or excluded in source program before compilation with respect to the condition.

What are compiler directives in Verilog?

Introduction. A compiler directive may be used to control the compilation of a Verilog description. The grave accent mark, `, denotes a compiler directive. 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 are the compiler directives in asp net?

ASP.NET – Directives

  • The Application Directive. The Application directive defines application-specific attributes.
  • The Assembly Directive.
  • The Control Directive.
  • The Implements Directive.
  • The Import Directive.
  • The Master Directive.
  • The MasterType Directive.
  • The OutputCache Directive.

What is compiler directive in Verilog?

What are the types of C processor directives?

There are 4 main types of preprocessor directives:

  • Macros.
  • File Inclusion.
  • Conditional Compilation.
  • Other directives.

Where Cplusplus is defined?

“__cplusplus Defined as an integer literal value when the translation unit is compiled as C++. Otherwise, undefined.” notice how both of them are only defined when you are compiling as C++.

What is a directive 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 Ifndef Systemverilog?

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 the difference between Localparam and parameter in Verilog?

Generally, the idea behind the localparam (added to the Verilog-2001 standard) is to protect value of localparam from accidental or incorrect redefinition by an end-user (unlike a parameter value, this value can’t be modified by parameter redefinition or by a defparam statement).