Picat Picat String and I/O Operations

Question 1

Which operator concatenates two strings or lists in Picat?

Accepted Answer

S1 ++ S2

Answer

concat(S1, S2)

Answer

append(S1, S2)

Answer

join(S1, S2)

Question 2

How are strings internally represented in Picat?

Accepted Answer

As lists of character codes

Answer

As arrays of characters

Answer

As atoms

Answer

As byte arrays

Question 3

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

Accepted Answer

to_string(N)

Answer

int_to_str(N)

Answer

number_to_atom(N)

Answer

char_code(N)

Question 4

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

Accepted Answer

A list of substrings split by Sep

Answer

A boolean indicating whether Sep exists

Answer

The index of the first Sep occurrence

Answer

A count of Sep occurrences

Question 5

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

Accepted Answer

read_line(L)

Answer

get_line(L)

Answer

readline(L)

Answer

input_line(L)

Question 6

How do you obtain the length of a string in Picat?

Accepted Answer

length(S)

Answer

string_length(S)

Answer

len(S)

Answer

size(S)