Compilare: user.cpp: In function ‘void urca(int)’: user.cpp:17: warning: array subscript has type ‘char’ user.cpp:17: warning: array subscript has type ‘char’ user.cpp:19: warning: array subscript has type ‘char’ user.cpp:19: warning: array subscript has type ‘char’ user.cpp: In function ‘void coboara(int)’: user.cpp:29: warning: array subscript has type ‘char’ user.cpp:29: warning: array subscript has type ‘char’ user.cpp:31: warning: array subscript has type ‘char’ user.cpp:31: warning: array subscript has type ‘char’ user.cpp:34: warning: array subscript has type ‘char’ user.cpp:34: warning: array subscript has type ‘char’ user.cpp: In function ‘void erase_first()’: user.cpp:44: warning: array subscript has type ‘char’ user.cpp:44: warning: array subscript has type ‘char’ user.cpp:44: warning: array subscript has type ‘char’