Picat Study Guide 2026

Everything you need to pass the Picat exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📋 Picat Exam Format at a Glance

145

Questions

165 min

Time Limit

31%

Passing Score

Take a Full Picat Exam Simulation →

📚 Picat Topics to Study (69)

General · 11 cards General Science · 11 cards Word Knowledge · 11 cards Constraint Programming with CP · 7 cards Constraint Programming with CP · 7 cards Constraint Programming with CP · 7 cards Constraint Programming with CP · 7 cards Data Structures and Types · 7 cards Data Structures and Types · 7 cards Data Structures and Types · 7 cards Data Structures and Types · 7 cards Functions vs. Predicates · 7 cards Functions vs. Predicates · 7 cards Functions vs. Predicates · 7 cards Functions vs. Predicates · 7 cards General · 7 cards General · 7 cards General · 7 cards General · 7 cards General Science · 7 cards General Science · 7 cards General Science · 7 cards General Science · 7 cards Imperative Programming Constructs · 7 cards Imperative Programming Constructs · 7 cards Imperative Programming Constructs · 7 cards Imperative Programming Constructs · 7 cards List Comprehensions in Picat · 7 cards List Comprehensions in Picat · 7 cards List Comprehensions in Picat · 7 cards

See all 69 topics as flashcards →

✍️ Sample Picat Questions & Answers

1. How do you declare a local variable inside a Picat imperative function?

✓ No declaration needed; first assignment creates it

In Picat, variables do not need explicit declarations; the first assignment in a scope implicitly introduces them.

2. What does Picat's `to_string/1` function do that a predicate could not directly accomplish?

✓ It returns a string value usable inline in expressions like `print(to_string(42) ++ "!")`

As a function, `to_string/1` returns a value immediately composable with operators like `++`.

3. What is the occurs check, and does Picat's default unification perform it?

✓ Prevents binding X to a term containing X to avoid circular structures; no, not by default

The occurs check prevents creating circular (infinite) terms by checking X ∉ T before X=T, but Picat (like most Prolog-family systems) skips it by default for performance.

4. She had a *relentlessly* positive attitude.

✓ Tireless

'Relentlessly' means in an unceasingly intense or harsh way. When applied to a positive attitude, it suggests an attitude that never gives up or diminishes. 'Tireless' perfectly captures this meaning, implying an attitude that persists without becoming weary or exhausted.

5. Consider the following Picat code. What value will be printed to the console? main => S = 0, foreach (X in [10, 5, 3]) S := S + X end, println(S).

✓ 18

The `foreach` loop iterates through each element of the list `[10, 5, 3]`. The variable `S` is initialized to 0. In each iteration, the current element `X` is added to `S`. The calculation proceeds as: `0 + 10 = 10`, then `10 + 5 = 15`, and finally `15 + 3 = 18`. The final value, 18, is printed.

6. In Picat CP, what does posting `X #>= Y # B` accomplish (assuming B is a 0/1 variable)?

✓ It sets B to 1 if X >= Y, and to 0 otherwise

The `#` operator creates a reified constraint, making B equal 1 exactly when the constraint X #>= Y is satisfied.

🎯 Free Picat Practice Tests

General Science · 11 questions General · 11 questions Word Knowledge · 11 questions List Comprehensions in Picat · 7 questions List Comprehensions in Picat · 7 questions List Comprehensions in Picat · 7 questions Logic Programming and Unification · 7 questions Logic Programming and Unification · 7 questions Logic Programming and Unification · 7 questions Logic Programming and Unification · 7 questions

📖 Picat Guides & Articles

Your Picat Study Path

1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation

🃏 Picat Flashcards (480)🏆 Picat Exam Simulation

Was this helpful?