Picat Picat String and I/O Operations 2

Question 1

Which built-in opens a file for writing in Picat?

Accepted Answer

open(File, write, Stream)

Answer

`open(File, write, Stream)` opens a file for writing and binds the resulting stream to Stream.

Question 2

What predicate writes a term followed by a newline to standard output in Picat?

Accepted Answer

writeln(T)

Answer

`writeln(T)` writes term T to standard output and appends a newline character.

Question 3

How do you close a file stream after I/O operations in Picat?

Accepted Answer

close(Stream)

Answer

`close(Stream)` closes an open file stream, freeing the associated resources.

Question 4

Which format specifier prints an integer inside Picat's `format` predicate?

Accepted Answer

~d

Answer

Picat's `format` predicate uses `~d` to print an integer argument.

Question 5

What does `read_term(Stream, Term, Options)` accomplish in Picat?

Accepted Answer

Reads and parses a Picat term from a stream

Answer

`read_term/3` reads and parses a complete Picat term from the given stream using the provided options.

Picat Practice Test