Compilare: user.cpp: In function ‘int main()’: user.cpp:19: warning: array subscript has type ‘char’ user.cpp:20: warning: array subscript has type ‘char’ user.cpp:22: warning: array subscript has type ‘char’ user.cpp:23: warning: array subscript has type ‘char’ user.cpp:33: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:50: 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:57: warning: array subscript has type ‘char’ user.cpp:58: warning: array subscript has type ‘char’