Compilare: main.cpp: In function 'bool fact()': main.cpp:51:39: warning: array subscript has type 'char' [-Wchar-subscripts] 51 | return bool(int((val[s[ind - 1]] + ok) % 2)); | ~~~~~~~~~^ main.cpp: In function 'int main()': main.cpp:87:13: warning: array subscript has type 'char' [-Wchar-subscripts] 87 | val[ch] = bool(int((val[ch] + 1) % 2)); | ^~ main.cpp:87:33: warning: array subscript has type 'char' [-Wchar-subscripts] 87 | val[ch] = bool(int((val[ch] + 1) % 2)); | ^~ main.cpp:74:15: warning: unused variable 'j' [-Wunused-variable] 74 | int n, i, j, p = 0; | ^