Compilare: user.cpp: In function 'int main()': user.cpp:59: warning: array subscript has type 'char' user.cpp:63: warning: array subscript has type 'char' user.cpp:71: warning: array subscript has type 'char' user.cpp:71: warning: array subscript has type 'char' user.cpp:72: warning: array subscript has type 'char' user.cpp:76: warning: array subscript has type 'char' user.cpp:76: warning: array subscript has type 'char' user.cpp:80: warning: array subscript has type 'char' user.cpp:81: warning: array subscript has type 'char'