Compilare: user.cpp: In function ‘int main()’: user.cpp:31:8: warning: unused variable ‘j’ [-Wunused-variable] int i,j,stop,k,prod,l,count,n; ^ user.cpp:31:10: warning: unused variable ‘stop’ [-Wunused-variable] int i,j,stop,k,prod,l,count,n; ^ user.cpp:31:15: warning: unused variable ‘k’ [-Wunused-variable] int i,j,stop,k,prod,l,count,n; ^ user.cpp:31:17: warning: unused variable ‘prod’ [-Wunused-variable] int i,j,stop,k,prod,l,count,n; ^ user.cpp:31:22: warning: unused variable ‘l’ [-Wunused-variable] int i,j,stop,k,prod,l,count,n; ^ user.cpp:31:24: warning: unused variable ‘count’ [-Wunused-variable] int i,j,stop,k,prod,l,count,n; ^