Compilare: main.cpp: In function 'void initializeFr(long long int*, long long int*)': main.cpp:42:18: warning: array subscript has type 'char' [-Wchar-subscripts] fIni[s[i]]++; ^ main.cpp:43:33: warning: array subscript has type 'char' [-Wchar-subscripts] fIniInv[changeCase(s[i])]++; ^ main.cpp: In function 'long long int getFr(long long int, char, int)': main.cpp:89:34: warning: array subscript has type 'char' [-Wchar-subscripts] fTot[want]++; ^ main.cpp:93:34: warning: array subscript has type 'char' [-Wchar-subscripts] fTot[want]++; ^ main.cpp:94:29: warning: array subscript has type 'char' [-Wchar-subscripts] return fTot[want]; ^