Compilare: user.cpp: In function ‘int main()’: user.cpp:9:20: warning: unused variable ‘k’ [-Wunused-variable] int n,m,x,y,i,j,k=1,ok=1,un=0,prim=0,ultim=0,ll,cc; ^ user.cpp:9:24: warning: unused variable ‘ok’ [-Wunused-variable] int n,m,x,y,i,j,k=1,ok=1,un=0,prim=0,ultim=0,ll,cc; ^ user.cpp:9:29: warning: unused variable ‘un’ [-Wunused-variable] int n,m,x,y,i,j,k=1,ok=1,un=0,prim=0,ultim=0,ll,cc; ^