请问哪位大佬知道为什么这个代码运行后print输出的异常为什么

Question

#include
#include
typedef struct splist
{
int data;
splist next;
} splist;
splist *CJ(splist *L)
{
L=(splist)malloc(sizeof(splist));
L->next=NULL;
splist p;
int n,i;
printf("请输入建表的长度");
scanf("%d",&n);
for(i=0;i<n;i++)
{
p=(splist)malloc(sizeof(splist));
printf("请输入数据");
scanf("%d",p->data);
p->next=L->next;
L->next=p;
}
return (splist*)L;
}
int print(splist *L){
splist *s=L->next;
while(s != NULL){
printf("%d ",s->data);
s = s->next;
}
return 0;
}

int main()
{
splist L=(splist)malloc(sizeof(splist));
L=CJ(L);

print(L);
return 0;

}

Answer 1

scanf("%d",p->data);
->
scanf("%d",&p->data);

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