Compilare: user.cpp: In function ‘void PreProcess_Dictionary()’: user.cpp:15:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] dictionary[A[i]]=len-i - 1; ^ user.cpp: In function ‘void Search_Pattern()’: user.cpp:28:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] j+=dictionary[B[i+j]]; ^ user.cpp:35:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] j += dictionary[B[j]]; ^