Так как язык не указан, приведу пример на SWI-Prolog.
Код:
read_int(Int) :- read(Int), integer(Int).split_int_by_numbers(0, []) :- !.split_int_by_numbers(N, [Number|Ints]) :- Number is mod(N, 10), RestN is div(N, 10), split_int_by_numbers(RestN, Ints).test_to_div(_, []).test_to_div(N, [Number|Ints]) :- mod(N, Number) =:= 0, test_to_div(N, Ints). test(Int) :- split_int_by_numbers(Int, Numbers), test_to_div(Int, Numbers), write(Int), write(" - Yes!"), nl.test(Int) :- write(Int), write(" - No!"), nl.?- read_int(Int), test(Int).
#include <iostream>
using namespace std;
string detectSeason(int k){
if(k < 1 || k > 12)
return "Invalid data";
if(k >= 3 && k < 6)
return "It's spring!";
if(k >= 6 && k < 9)
return "It's summer!";
if(k >= 9 && k < 12)
return "It's autumn!";
return "It's winter!";
}
int main(){
int n;
cin >> n;
cout << detectSeason(n);
}