Compilare: user.cpp: In function ‘int main()’: user.cpp:19: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:28: warning: array subscript has type ‘char’ user.cpp:29: warning: array subscript has type ‘char’ user.cpp:29: warning: array subscript has type ‘char’ user.cpp:35: warning: array subscript has type ‘char’ user.cpp:36: warning: array subscript has type ‘char’ user.cpp:36: warning: array subscript has type ‘char’