Compilare: user.cpp: In function 'int main()': user.cpp:39: warning: array subscript has type 'char' user.cpp:41: warning: array subscript has type 'char' user.cpp:41: warning: array subscript has type 'char' user.cpp:46: warning: array subscript has type 'char' user.cpp:48: warning: array subscript has type 'char' user.cpp:48: warning: array subscript has type 'char' user.cpp:56: warning: array subscript has type 'char' user.cpp:56: warning: array subscript has type 'char' user.cpp:56: warning: array subscript has type 'char' user.cpp:56: warning: array subscript has type 'char' user.cpp:58: warning: array subscript has type 'char' user.cpp:59: warning: array subscript has type 'char'