Compilare: user.cpp:33:2: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:13: warning: comparison between signed and unsigned integer expressions user.cpp:15: warning: comparison between signed and unsigned integer expressions user.cpp:17: warning: comparison between signed and unsigned integer expressions user.cpp:11: warning: 'iaux' may be used uninitialized in this function