Compilare: user.cpp: In function ‘int main()’: user.cpp:11:11: warning: unused variable ‘n’ [-Wunused-variable] int P,n,contor,i,ci,k; ^ user.cpp:11:22: warning: unused variable ‘ci’ [-Wunused-variable] int P,n,contor,i,ci,k; ^ user.cpp:17:14: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (k%5==0) ^