Compilare: user.cpp: In function ‘void insert(int, int)’: user.cpp:18:43: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] nod p;p->x=x;p->y=y;p->next=S[m];S[m]=p; ^ user.cpp: In function ‘int main()’: user.cpp:18:43: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:18:8: note: ‘p’ was declared here nod p;p->x=x;p->y=y;p->next=S[m];S[m]=p; ^