Compilare: user.cpp: In function 'int main()': user.cpp:46: warning: array subscript has type 'char' user.cpp:51: warning: array subscript has type 'char' user.cpp:52: warning: array subscript has type 'char' /tmp/ccyISC65.o: In function `main': user.cpp:(.text+0x136): warning: the `gets' function is dangerous and should not be used.