Compilare: main.cpp: In function 'int main()': main.cpp:25:11: warning: array subscript has type 'char' [-Wchar-subscripts] 25 | F[c]=1-F[c]; | ^ main.cpp:25:18: warning: array subscript has type 'char' [-Wchar-subscripts] 25 | F[c]=1-F[c]; | ^ main.cpp: In function 'int factor()': main.cpp:70:20: warning: array subscript has type 'char' [-Wchar-subscripts] 70 | return F[ t[i++] ]; | ~~~~~^