Compilare: user.cpp: In function ‘int main()’: user.cpp:24:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] pw[i] = i - '0'; ^ user.cpp:28:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] pw[i] = 10 + i - 'A'; ^ user.cpp:37:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] cur = (cur * B) + pw[c]; ^