Compilare: user.cpp: In function ‘int main()’: user.cpp:41:10: warning: unused variable ‘mn’ [-Wunused-variable] int N,i,mn,last,dv,t; ^ user.cpp:41:13: warning: unused variable ‘last’ [-Wunused-variable] int N,i,mn,last,dv,t; ^ user.cpp:41:18: warning: unused variable ‘dv’ [-Wunused-variable] int N,i,mn,last,dv,t; ^ user.cpp:41:21: warning: unused variable ‘t’ [-Wunused-variable] int N,i,mn,last,dv,t; ^