Compilare: user.cpp: In function 'int main()': user.cpp:16: warning: array subscript has type 'char' user.cpp:18: warning: array subscript has type 'char' user.cpp:22: warning: array subscript has type 'char' user.cpp:24: warning: statement has no effect user.cpp:27: warning: statement has no effect /tmp/ccqWbCO1.o: In function `main': user.cpp:(.text+0xa9): warning: the `gets' function is dangerous and should not be used.