杂志订阅管理系统 ＼要求： if(SI==last)//停车场已满 { printf("停车场已满，请在外面排队\n"); if(head->next==NULL) { rcar=(struct road*)malloc(sizeof(struct road)); scanf("%d",&(rcar->plat)); scanf("%d",&(rcar->rtime)); rcar->next=NULL; head->next=rcar; goto exe; }//end if else { rcar=head->next;//找到队尾 for(;rcar