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Top 30 D Programming Language Interview Questions for 2022

1) What is D programming language?

D programming language is an object oriented programming language. It is created by Walter Bright of Digital Mars. It was released in 2001.

2) Who is the developer of D programming language?

D Language Foundation is the developer of D programming language.

3) What are the features of D programming language?

D programming language features are:
  • Garbage collection
  • First class arrays
  • Open source
  • Inner classes
  • Closures
  • Anonymous functions
  • Lazy evaluation etc.

4) How can we write a simple program in D programming language?

We can write a simple program in D programming language by using following code:
import std.stdio;   

 void main(string[] args) {   

   writeln("Hello World!");   

}  

5) What are the compilers in D programming language?
The compilers of D programming language are:
  • DMD
  • GDC
  • LDC

6) What are the two expressions in D programming language?

There are two expressions in D programming language:
  • lvalue
  • rvalue

7) What is Enum in D programming language?

Enum is a keyword that used to define named constant values. Syntax:
enum enum_name {    

   enumeration list   

}

8) What are the D programming Operators?

D programming operators are:
  • Arithmetic Operators
  • Relational Operators
  • Logical Operators
  • Bitwise Operators
  • Assignment Operators
  • Misc Operators

9) What are the various functions in D programming language?

The functions of D programming Language are:
  • Pure Functions
  • Nothrow Functions
  • Ref Functions
  • Auto Functions
  • Variadic Functions etc.

10) How can we read character in D programming language?

We can read character in D programming Language by using read Unicode character. Example:
readf(" %s", &letter);

11) What is the way to represents string in D programming language?

In D programming language, string is represented in two ways:
  • Character array
  • Core language string

12) How can we declare an array in D programming language?

In D programming language, we can declare an array by using given code.
  1. type arrayName [ arraySize ];

13) What are the pointer operations in D programming language?

The pointer operations in D programming Language are:
  • We can define pointer variables.
  • We can assign the address of a variable to a pointer
  • We can access the value of address in the pointer variable.

14) What is use of tuples?

Tuples is used to combine the multiple values as a single object. It contains a sequence of elements. Example:
import std.stdio;   

import std.typecons;   

 void main() {   

   auto myTuple = tuple(1, "Tuts");   

   writeln(myTuple);   

   writeln(myTuple[0]);   

   writeln(myTuple[1]);   

}

15) What are the various editors for D programming Language?

There are various editors for D programming language: EMACSVIMEPSION and many more.

16) What is the extension of D programming?

The extension of D programming is ".d".

17) What are the types of D Compiler?

There are different types of D Compiler:
  • DMD
  • GDC
  • LDC

18) Is D programming language case sensitive?

Yse, D programming language is case sensitive.

19) What are the data types used in D programming language?

There are following data types used in D programming language: char, int, float, double and void.

20) What is an enumeration?

An enumeration is used to define named constant value. Syntax:
enum enum_name {    

   enumeration list   

}

21) How can we read character in D?

We can read character in D by using readf. Example:
readf(" %s", &letter);

22) What is the techniques to represent string in D programming language?

In D programming language, there are two techniques to represents of string.
  • Character array
  • Core language string

23) What is the array properties in D programming language?

In D programming language, the array properties are given below:
  • .init
  • .sizeof
  • .length
  • .prt
  • .dup
  • .reverse

24) Does D programming language allow Multi Dimensional array?

Yes, D programming language allow Multi dimensional array. Syntax:
type name[size1][size2]...[sizeN];

25) How can we define a union in D Programming language?

We can define a union in F programming language by using following code:
union [union tag] {   

   member definition;   

   member definition;   

   ...   

   member definition;   

} [one or more union variables];

26) Write the example of string mixins in D programming language?

In D programming language, the example of string mixins is given below:
import std.stdio;   

   

void main() {   

   mixin(`writeln("Hello World!");`);   

}

27) What are the variables that can never be mutated?

There are three variables that can never be mutated:
  • enum constants
  • immutable variables
  • const variables

28) How to write a File in D programming language?

The following command is used to write a file in D programming language:
file.writeln("hello");

29) Which method is used to start a new thread?

Spawn() method is used to start a new thread .

30) What is the syntax to catch exception in D programming language?

The following syntax is used to catch exception in D programming language. Syntax:
 try {   

   // protected code   

}   

  

catch( ExceptionName e ) {   

   // code to handle ExceptionName exception   

}



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