Compilare: user.cpp: In function ‘int main()’: user.cpp:16:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[b[i]]++; ^ user.cpp:19:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(viz[a[i]]) ^ user.cpp:21:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[a[i]]--; ^ user.cpp:36:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] else viz[a[i]]++; ^ user.cpp:45:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[b[i]]++; ^ user.cpp:47:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(viz[a[i]]) ^ user.cpp:49:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] viz[a[i]]--; ^ user.cpp:65:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] else viz[a[i]]++; ^