Picat Picat String and I/O Operations

Question 1

Which operator concatenates two strings or lists in Picat?

Accepted Answer

S1 ++ S2

Answer

In Picat, the `++` operator concatenates two strings or lists.

Question 2

How are strings internally represented in Picat?

Accepted Answer

As lists of character codes

Answer

Strings in Picat are represented as lists of character codes (integers), similar to traditional Prolog.

Question 3

Which built-in converts a number to its string representation in Picat?

Accepted Answer

to_string(N)

Answer

`to_string(N)` converts a number (or any term) to its string representation in Picat.

Question 4

What does `split(Str, Sep)` return in Picat?

Accepted Answer

A list of substrings split by Sep

Answer

`split(Str, Sep)` returns a list of substrings produced by splitting Str on the separator Sep.

Question 5

Which predicate reads a full line from standard input in Picat?

Accepted Answer

read_line(L)

Answer

`read_line(L)` reads one line from standard input and unifies it with L.

Picat Practice Test