Compilare: user.cpp: In function ‘void read()’: user.cpp:32:9: warning: variable ‘aux’ set but not used [-Wunused-but-set-variable] dom aux; ^ user.cpp: In function ‘int main()’: user.cpp:141:14: warning: unused variable ‘ok’ [-Wunused-variable] int nr=0,ok=1,start=-1; ^