Compilare: user.cpp:15:1: warning: "/*" within comment user.cpp: In constructor `node::node(int, int, node*)': user.cpp:34: warning: `node::l' will be initialized after user.cpp:32: warning: `node*node::next' user.cpp:35: warning: when initialized here user.cpp: In function `int main()': user.cpp:112: warning: comparison between signed and unsigned integer expressions user.cpp:124: warning: int format, long unsigned int arg (arg 2) user.cpp:57: warning: unused variable `int l' user.cpp:128:2: warning: no newline at end of file