C语言顺序表的创建和输出

Question

#include <malloc.h>
#include <stdio.h>

#define MaxSize 50
typedef int ElemType;
typedef struct
{ ElemType data[MaxSize];
int length;
}SqList;
void InitLIst(SqList *L)

{L=(SqList*)malloc(sizeof(SqList));
L->length=0;
}
void CreateList(SqList L,ElemType a[],int n)
{
printf("%d",a[0]);
int i=0,k=0;
L=(SqList)malloc(sizeof(SqList));
while(i<n)
{ L->data[k]=a[i];
k++;i++;
}
L->length=k;
}
void DispList(SqList *L)
{ for(int i=0;ilength;i++)
printf("%d",L->data[i]);
printf("已全部输出\n");
}
int main()
{
SqList L;
ElemType a[10]={0,1,2,3,4,5,6,7,8,9};
InitLIst(&L);
CreateList(&L,a, 10);
DispList(&L);
}

为什么输出结果是这样

Answer 1

修改如下，供参考：

#include <malloc.h>
#include <stdio.h>
#define MaxSize 50
typedef int ElemType;
typedef struct
{
    ElemType data[MaxSize];
    int length;
}SqList;
void InitLIst(SqList *L)
{
    //L=(SqList*)malloc(sizeof(SqList));这行多余
    L->length=0;
}
void CreateList(SqList* L,ElemType a[],int n)
{
    //printf("%d",a[0]);               //修改
    int i=0,k=0;
    //L=(SqList)malloc(sizeof(SqList));//修改
    while(i<n)
    {
        L->data[k]=a[i];
        k++;  i++;
    }
    L->length=k;
}
void DispList(SqList *L)
{
    for(int i=0;i<L->length;i++)
        printf(" %d",L->data[i]);
    printf("已全部输出\n");
}
int main()
{
    SqList L;
    ElemType a[10]={0,1,2,3,4,5,6,7,8,9};
    InitLIst(&L);
    CreateList(&L,a, 10);
    DispList(&L);
    return 0;
}