Compilare: user.cpp: In function 'int main()': user.cpp:33: warning: array subscript has type 'char' user.cpp:47: warning: array subscript has type 'char' user.cpp:52: warning: array subscript has type 'char' user.cpp:53: warning: array subscript has type 'char' user.cpp:64: warning: array subscript has type 'char' user.cpp:65: warning: array subscript has type 'char' user.cpp:68: warning: array subscript has type 'char' user.cpp:69: warning: array subscript has type 'char'