Compilare: main.cpp: In function 'int main()': main.cpp:21:17: warning: array subscript has type 'char' [-Wchar-subscripts] f_a[A[i]]++; ^ main.cpp:25:17: warning: array subscript has type 'char' [-Wchar-subscripts] f_b[B[i]]++; ^ main.cpp:37:17: warning: array subscript has type 'char' [-Wchar-subscripts] f_a[B[i]]--; ^ main.cpp:43:20: warning: array subscript has type 'char' [-Wchar-subscripts] if(f_b[A[i]]>0) ^ main.cpp:45:21: warning: array subscript has type 'char' [-Wchar-subscripts] f_b[A[i]]--; ^ main.cpp:46:31: warning: array subscript has type 'char' [-Wchar-subscripts] while(f_a[st.top()]>0&&st.top()>A[i]&&st.size()!=0) ^ main.cpp:48:29: warning: array subscript has type 'char' [-Wchar-subscripts] f_b[st.top()]++; ^ main.cpp:49:29: warning: array subscript has type 'char' [-Wchar-subscripts] f_a[st.top()]--; ^ main.cpp:56:21: warning: array subscript has type 'char' [-Wchar-subscripts] f_a[A[i]]--; ^