Compilare: user.cpp: In function `int ciur(int)': user.cpp:31: warning: control reaches end of non-void function user.cpp: In function `int assign(long unsigned int*, long unsigned int)': user.cpp:37: warning: control reaches end of non-void function user.cpp: In function `void afiseaza(long unsigned int*)': user.cpp:63: warning: comparison between signed and unsigned integer expressions user.cpp:64: warning: comparison between signed and unsigned integer expressions