Compilare: user.cpp: In function 'void read()': user.cpp:17: warning: array subscript has type 'char' user.cpp:23: warning: array subscript has type 'char' user.cpp:28: warning: array subscript has type 'char' user.cpp:29: warning: array subscript has type 'char' user.cpp:47: warning: array subscript has type 'char' user.cpp:50: warning: array subscript has type 'char' user.cpp:53: warning: array subscript has type 'char' user.cpp:56: warning: array subscript has type 'char' user.cpp:10: warning: 'c' may be used uninitialized in this function user.cpp:9: warning: 'p' may be used uninitialized in this function