Data Structures and Types Flashcards
7 cards from real Picat practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Data Structures and Types flashcards as text
What does `number(3.14)` return in Picat?
Answer: true
`number/1` succeeds for both integers and floats; 3.14 is a float and therefore a number.
What does `integer(3.0)` evaluate to in Picat?
Answer: false
`integer/1` checks the type precisely; 3.0 is a float even though its value is whole, so it returns false.
What does `round(3.7)` return in Picat?
Answer: 4
`round/1` rounds to the nearest integer; 3.7 rounds up to 4.
What is the result of `X is 7 // 2` in Picat?
Answer: 3
The `//` operator performs integer division truncating toward zero; 7 // 2 = 3.
Which function converts a number to its string representation in Picat?
Answer: to_string(N)
`to_string(N)` converts any Picat term, including numbers, to its string representation.
What does `var(X)` return immediately before X is bound to any value?
Answer: true
`var/1` succeeds (returns true) when its argument is an unbound logic variable.
In Picat, what does `nonvar(42)` return?
Answer: true
`nonvar(X)` succeeds when X is not an unbound variable; the integer 42 is fully bound, so it returns true.