insert(head,i,m); printf("插入后的链表是: \n"); t=head->next; while(t!=NULL) { printf("%d ",t->date); t=t->next; } printf("\n输入要删除元素的位置 :\n"); scanf("%d",&s); delet(head,s); printf("删除后的链表是:\n"); t=head->next; while(t!=NULL) { printf("%...