Compilare: main.cpp: In function 'int main()': main.cpp:20:17: warning: array subscript has type 'char' [-Wchar-subscripts] f_a[A[i]]++; ^ main.cpp:24:17: warning: array subscript has type 'char' [-Wchar-subscripts] f_b[B[i]]++; ^ main.cpp:28:20: warning: array subscript has type 'char' [-Wchar-subscripts] if(f_b[A[i]]-f_a[A[i]]>0) ^ main.cpp:28:30: warning: array subscript has type 'char' [-Wchar-subscripts] if(f_b[A[i]]-f_a[A[i]]>0) ^ main.cpp:37:17: warning: array subscript has type 'char' [-Wchar-subscripts] f_a[B[i]]--; ^ main.cpp:42:20: warning: array subscript has type 'char' [-Wchar-subscripts] if(f_b[A[i]]>0) ^ main.cpp:44:21: warning: array subscript has type 'char' [-Wchar-subscripts] f_b[A[i]]--; ^ main.cpp:45:48: warning: array subscript has type 'char' [-Wchar-subscripts] while(s1.top()>A[i]&&f_a[A[s1.top()]]&&s1.size()!=0) ^ main.cpp:45:49: warning: array subscript has type 'char' [-Wchar-subscripts] while(s1.top()>A[i]&&f_a[A[s1.top()]]&&s1.size()!=0) ^ main.cpp:47:29: warning: array subscript has type 'char' [-Wchar-subscripts] f_b[s1.top()]++; ^ main.cpp:48:29: warning: array subscript has type 'char' [-Wchar-subscripts] f_a[s1.top()]--; ^ main.cpp:55:21: warning: array subscript has type 'char' [-Wchar-subscripts] f_a[A[i]]--; ^