Compilare: main.cpp: In function 'int main()': main.cpp:23:18: warning: array subscript has type 'char' [-Wchar-subscripts] 23 | if(f[ch] == 0) | ^~ main.cpp:29:15: warning: array subscript has type 'char' [-Wchar-subscripts] 29 | f[ch]++; | ^~ main.cpp:36:19: warning: array subscript has type 'char' [-Wchar-subscripts] 36 | else if(f[a] % 2 == f[b] % 2 && f[b] % 2 == f[c] % 2) | ^ main.cpp:36:31: warning: array subscript has type 'char' [-Wchar-subscripts] 36 | else if(f[a] % 2 == f[b] % 2 && f[b] % 2 == f[c] % 2) | ^ main.cpp:36:43: warning: array subscript has type 'char' [-Wchar-subscripts] 36 | else if(f[a] % 2 == f[b] % 2 && f[b] % 2 == f[c] % 2) | ^ main.cpp:36:55: warning: array subscript has type 'char' [-Wchar-subscripts] 36 | else if(f[a] % 2 == f[b] % 2 && f[b] % 2 == f[c] % 2) | ^ main.cpp:43:11: warning: array subscript has type 'char' [-Wchar-subscripts] 43 | f[a] = f[b] = f[c] = 0; | ^ main.cpp:43:18: warning: array subscript has type 'char' [-Wchar-subscripts] 43 | f[a] = f[b] = f[c] = 0; | ^ main.cpp:43:25: warning: array subscript has type 'char' [-Wchar-subscripts] 43 | f[a] = f[b] = f[c] = 0; | ^