Compilare: user.cpp: In function ‘int main()’: user.cpp:5:27: warning: unused variable ‘d’ [-Wunused-variable] { long long int n,i,j,s,r,d,c,a,b; ^ user.cpp:5:29: warning: unused variable ‘c’ [-Wunused-variable] { long long int n,i,j,s,r,d,c,a,b; ^ user.cpp:5:31: warning: unused variable ‘a’ [-Wunused-variable] { long long int n,i,j,s,r,d,c,a,b; ^ user.cpp:5:33: warning: unused variable ‘b’ [-Wunused-variable] { long long int n,i,j,s,r,d,c,a,b; ^