向大佬求助，初学数据结构在顺序表的初始化和取值里遇到Status does not name a type怎么办?代码如下:#define MAXSIZE 10000 typedef struct { char no[20]; char name[50]; float price; }Book; typedef struct { Book *elem; int length; }SqList; Status IninList(SqList &L) { L.elem=new ElemType[MAXSIZE]; if(!L.elem) exit(OVERFLOW); L.length=0; return OK; } Status GetElem(SqList L,int i,ElemType &e) { if(i<1||i>L.length)return ERROR; e=L.elem[i-1]; return OK; }情况如图: