Compilare: user.cpp: In function ‘void back()’: user.cpp:14: warning: array subscript has type ‘char’ user.cpp:18: warning: array subscript has type ‘char’ user.cpp:20: warning: array subscript has type ‘char’ user.cpp:22: warning: array subscript has type ‘char’ user.cpp:22: warning: array subscript has type ‘char’ user.cpp:22: warning: array subscript has type ‘char’ user.cpp:22: warning: array subscript has type ‘char’ user.cpp:22: warning: array subscript has type ‘char’ user.cpp:22: warning: array subscript has type ‘char’ user.cpp:25: warning: array subscript has type ‘char’ user.cpp:25: warning: array subscript has type ‘char’ user.cpp:26: warning: array subscript has type ‘char’ user.cpp:26: warning: array subscript has type ‘char’ user.cpp:27: warning: array subscript has type ‘char’ user.cpp:27: warning: array subscript has type ‘char’ user.cpp:27: warning: array subscript has type ‘char’ user.cpp:27: 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:30: 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:36: warning: array subscript has type ‘char’ user.cpp:38: warning: array subscript has type ‘char’ user.cpp:38: warning: array subscript has type ‘char’ user.cpp:38: warning: array subscript has type ‘char’ user.cpp:38: warning: array subscript has type ‘char’ user.cpp:38: warning: array subscript has type ‘char’ user.cpp:38: warning: array subscript has type ‘char’ user.cpp:40: warning: array subscript has type ‘char’ user.cpp:40: warning: array subscript has type ‘char’ user.cpp:40: warning: array subscript has type ‘char’ user.cpp:40: warning: array subscript has type ‘char’ user.cpp:40: warning: array subscript has type ‘char’ user.cpp:40: warning: array subscript has type ‘char’ user.cpp:43: warning: array subscript has type ‘char’ user.cpp:43: warning: array subscript has type ‘char’ user.cpp:44: warning: array subscript has type ‘char’ user.cpp:44: warning: array subscript has type ‘char’ user.cpp:45: warning: array subscript has type ‘char’ user.cpp:45: warning: array subscript has type ‘char’ user.cpp:45: warning: array subscript has type ‘char’ user.cpp:45: warning: array subscript has type ‘char’ user.cpp:47: warning: array subscript has type ‘char’ user.cpp:47: warning: array subscript has type ‘char’ user.cpp:48: warning: array subscript has type ‘char’ user.cpp:49: warning: array subscript has type ‘char’ user.cpp:52: warning: array subscript has type ‘char’ user.cpp:63: warning: array subscript has type ‘char’