#include<stdio.h>
#include<stdlib.h>
typedef int ElemType;
struct Sqlist
{
    ElemType* elem;
    int length;
    int listsize;
}Sqlist
void InitList(Sqlist &L)   为什么老出现error: expected initializer before 'void'|
{
    L.elem=(ElemType*)malloc(100*sizeof(ElemType));
    if(!L.elem)
      printf("ERROR");
    L.length=0;
    L.listsize=100;
}
int ListAdd(Sqlist &L,ElemType n)
{
    int *q=&(L.elem[L.length]);
    *q=n;
    ++L.length;
    return 0;
}
void ListGet(Sqlist &L)
{
    int x=L.length;
    if(L.length<0)
       printf("ERROR");
    while(L.length>0)
    {
        L.length--;
        printf("%d",L.elem[L.length]);

    }
}
int getlength(Sqlist &L)
{
    return L.length;
}
int main()
{
    int n;
    Sqlist sqlist;
    InitList(sqlist);     error: 'InitList' was not declared in this scope|
    while(!scanf("%d",&n))
    {
      ListAdd(sqlist,n);
    }
    printf("%d",getlength(sqlist));
    ListGet(sqlist);
    return 0;
}
以上两处错误该如何让修改