Compilare: user.cpp: In function 'int main()': user.cpp:15: warning: array subscript has type 'char' user.cpp:15: warning: array subscript has type 'char' user.cpp:18: warning: array subscript has type 'char' user.cpp:19: warning: array subscript has type 'char' user.cpp:20: warning: array subscript has type 'char' user.cpp:21: warning: array subscript has type 'char' user.cpp:25: warning: array subscript has type 'char' user.cpp:30: warning: array subscript has type 'char' user.cpp:33: warning: array subscript has type 'char' user.cpp:33: 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:36: warning: format '%ld' expects type 'long int', but argument 2 has type 'int'