Compilare: user.cpp: In function ‘int main()’: user.cpp:22:6: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[c] = i + 'a' - 1; ^ user.cpp:30:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[j - 1] = v[c]; ^ user.cpp:44:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] g << rasp[str[i]]; ^