Compilare: user.cpp: In function 'int t()': user.cpp:109: warning: array subscript has type 'char' user.cpp: In function 'int main()': user.cpp:129: warning: array subscript has type 'char' user.cpp:129: warning: array subscript has type 'char' user.cpp:130: warning: array subscript has type 'char' /tmp/ccYIl385.o: In function `main': user.cpp:(.text+0x3a4): warning: the `gets' function is dangerous and should not be used.