Compilare: user.cpp: In function ‘int main()’: user.cpp:26:29: warning: unused variable ‘k1’ [-Wunused-variable] int p=0,u=-1,n,nr,i,j,a,k1,k2,l1,l2; ^ user.cpp:26:32: warning: unused variable ‘k2’ [-Wunused-variable] int p=0,u=-1,n,nr,i,j,a,k1,k2,l1,l2; ^ user.cpp:26:35: warning: unused variable ‘l1’ [-Wunused-variable] int p=0,u=-1,n,nr,i,j,a,k1,k2,l1,l2; ^ user.cpp:26:38: warning: unused variable ‘l2’ [-Wunused-variable] int p=0,u=-1,n,nr,i,j,a,k1,k2,l1,l2; ^