StackEmpty int Stack Empty (Link Stack *S)( return s->tol p NULL Pop int Pop( linkstack *S, Stack Data &x)t if( Stack Empty(S)) return 0; StackNode *p=S->top S->top=p->link >data free(p) return 1▪ StackEmpty int StackEmpty (LinkStack *S) { return S->top == NULL; } ▪ Pop int Pop ( LinkStack *S, StackData &x ) { if ( StackEmpty (S) ) return 0; StackNode * p = S->top; S->top = p->link; x = p->data; free (p); return 1; }