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Prolog

Prolog

Prolog is a general-purpose logic programming language associated with artificial intelligence and computational linguistics.

Master Prolog with
Interactive Learning

Elevate your Prolog skills through 110 curated exercises across 0 core concepts. Master problem-solving with a structured learning path designed for modern developers.

Prolog

About Prolog

Prolog (short for "Programming Logic") is a declarative and logic-based programming language developed in 1972 by Alain Colmerauer and Philippe Roussel. It has many applications, most notably in Artificial Intelligence for its pattern matching abilities over natural language parse trees.

Prolog is written in "facts" and "rules" that define logical formulas, similar to functional programs. Learning Prolog is a great way to improve skills with recursion, predicate logic, and constraint logic programming.

Key Features of Prolog

Compatible

SWI-Prolog offers a comprehensive set of built-in predicates, covering many established standards.

Simplicity

A single language element, called a clause, is the basis of all prolog relations and programs.

Declarative

Prolog focuses on what holds true about solutions, rather than how it is implemented.

Logical

Prolog is based on the rules of logic, with execution being a form of logical resolution.

Homoiconic

Prolog programs are also valid prolog terms, programs can interact with other prolog programs.

Portable

Implementations exist for Unix/Linux, Windows, MacOS platforms with targets to WebAssembly (WASM).

Track icon

Compatible

SWI-Prolog offers a comprehensive set of built-in predicates, covering many established standards.

Simplicity

A single language element, called a clause, is the basis of all prolog relations and programs.

Declarative

Prolog focuses on what holds true about solutions, rather than how it is implemented.

Logical

Prolog is based on the rules of logic, with execution being a form of logical resolution.

Homoiconic

Prolog programs are also valid prolog terms, programs can interact with other prolog programs.

Portable

Implementations exist for Unix/Linux, Windows, MacOS platforms with targets to WebAssembly (WASM).

Dive into Prolog practice challenges

Hello World
Hello World
Level 1

SlaveCode's classic introductory exercise. Just say "Hello, World!".

Resistor Color
Resistor Color
Level 1

Convert a resistor band's color to its numeric representation.

Reverse String
Reverse String
Level 1

Reverse a given string.

Wedding Woes
Wedding Woes
Level 1

Infer family relations from some basic facts.

Difference of Squares
Difference of Squares
Level 2

Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.

Gigasecond
Gigasecond
Level 2

Given a moment, determine the moment that would be after a gigasecond has passed.