Problem Solving With Prolog -

In most languages, you tell the computer how to solve a problem (imperative). In Prolog, you describe what the problem is (declarative).

Problem Solving with Prolog Prolog, short for , is a declarative programming language that fundamentally changes how you approach problem-solving . Instead of writing a sequence of steps (as in Python or Java), you define the logical relationships of a problem and let the computer's built-in "inference engine" figure out the solution. 1. The Core Philosophy: Declarative vs. Imperative

Basic truths about your world (e.g., parent(bob, alice). means Bob is a parent of Alice). Problem Solving with Prolog

Logical implications (e.g., grandparent(X, Z) :- parent(X, Y), parent(Y, Z). means X is a grandparent of Z if X is a parent of Y AND Y is a parent of Z).

Prolog is famous for solving complex logical puzzles with very little code: In most languages, you tell the computer how

Questions you ask the system (e.g., ?- grandparent(bob, Who). ). 2. How Prolog "Thinks" Prolog solves problems using two primary mechanisms:

A sophisticated form of pattern matching that tries to make two expressions identical by assigning values to variables. Instead of writing a sequence of steps (as

If Prolog reaches a dead end while searching for an answer, it automatically "steps back" and tries a different path. This makes it incredibly powerful for solving puzzles where you have to explore many possibilities. 3. Classic Problem-Solving Examples