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What are boolean literals in D programming?

Chinweuba Elijah Azubuike

What are literals?

Literals are values of variables that cannot be changed after definition.

Types of literals in D

There are five types of literals in D programming:

  1. Integer numerals
  2. Floating-point numerals
  3. Characters
  4. Strings
  5. Boolean values

In this shot, we will focus on the boolean literal.

What are boolean literals?

Boolean literals convey the boolean logic, which means that there are two boolean literals:

  1. True
  2. False

True should not be assumed to have the value 1 and false should not be assumed to have the value 0. These boolean literals are the same as the standard D keywords true and false.

Example

import std.stdio;
 bool boolval = true; 

int main()
{
    writeln(boolval);
    return 0;
}
Defining a boolean

Explanation

Line 2: We define a boolean variable called boolval.

Line 6: Inside the main function, we print the value that boolval contains, which is true.

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Chinweuba Elijah Azubuike
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