Compilare: user.cpp: In function ‘int main()’: user.cpp:18:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(cod[x[i]]) w=(cod[x[i]]==y[i]); ^ user.cpp:18:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(cod[x[i]]) w=(cod[x[i]]==y[i]); ^ user.cpp:19:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] else cod[x[i]]=y[i]; ^ user.cpp:26:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(cod[c]) g<<c<<' '<<cod[c]<<'\n'; ^ user.cpp:26:40: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(cod[c]) g<<c<<' '<<cod[c]<<'\n'; ^