Compilare: user.cpp:46:2: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:17: warning: comparison between signed and unsigned integer expressions user.cpp:19: warning: comparison between signed and unsigned integer expressions user.cpp:20: warning: comparison between signed and unsigned integer expressions user.cpp:23: warning: comparison between signed and unsigned integer expressions user.cpp:24: warning: comparison between signed and unsigned integer expressions user.cpp:28: warning: comparison between signed and unsigned integer expressions user.cpp:38: warning: comparison between signed and unsigned integer expressions /tmp/cc8YncEk.o: In function `main': user.cpp:(.text+0x72): warning: the `gets' function is dangerous and should not be used.