Compilare: user.cpp: In function ‘int main()’: user.cpp:15:13: warning: variable ‘k’ set but not used [-Wunused-but-set-variable] int n,q,k,l1,l2,m,i,a,b; ^ user.cpp:15:15: warning: unused variable ‘l1’ [-Wunused-variable] int n,q,k,l1,l2,m,i,a,b; ^ user.cpp:15:18: warning: unused variable ‘l2’ [-Wunused-variable] int n,q,k,l1,l2,m,i,a,b; ^ user.cpp:15:21: warning: unused variable ‘m’ [-Wunused-variable] int n,q,k,l1,l2,m,i,a,b; ^