Compilare: user.cpp: In function 'int main()': user.cpp:21: warning: array subscript has type 'char' user.cpp:23: warning: array subscript has type 'char' user.cpp:31: warning: array subscript has type 'char' user.cpp:32: warning: array subscript has type 'char' user.cpp:11: warning: 'p' may be used uninitialized in this function user.cpp:11: warning: 'u' may be used uninitialized in this function