#include <stdio.h>
#include <stdlib.h>
#include <iostream.h>
#define     OK      1
#define     ERROR     0
#define     OVERFLOW     -2
typedef     int     ElemType;   
typedef     int Status;


#define     LIST_INIT_SIZE 100
#define     LISTINCREMENT     10
typedef     struct
{
     ElemType *elem;//elem是整数类型的指针吗？
     int length;
     int listsize;   
}SqList;


Status InitList_Sq(SqList &L)
{
          int i;
          L.elem = (ElemType * )malloc(LIST_INIT_SIZE*sizeof(ElemType));//L.elem的数据类型是指针类型吗？
          if (! L.elem) exit (OVERFLOW);
              for(i=1;i<=5;i++)
              {
                  printf("input elem:\n");
                  scanf("%d",&L.elem[i-1]);
              
              }

          L.listsize = LIST_INIT_SIZE;
          return OK;
}

en

Status InitList_Sq(SqList &L)
{
          int i;
          L.elem = (ElemType * )malloc(LIST_INIT_SIZE*sizeof(ElemType));
          if (! L.elem) exit (OVERFLOW);
              for(i=1;i<=5;i++)
              {
                  printf("input elem:\n");
                  scanf("%d",&L.elem[i-1]);//如果L.elem是指针类型那么在输入的时候为什么还要加取地址符&呢？
              
              }

          L.listsize = LIST_INIT_SIZE;
          return OK;
}