struct xuesheng
{
int num;
struct xuesheng *next;
};
typedef struct xuesheng DN;
DN *input1109()
{
DN *head,*p1,*p2;
int i,n;
printf("请输入需要输入的学生个数：");
scanf("%d",&n);
head=NULL;
for (i=0;i<n;i++)
{
if(i=0)
{
p1=(DN *)malloc(sizeof(DN));
head=p1;
p1->num=i+1;
p2=p1;
}
else
{
p1=(DN *)malloc(sizeof(DN));
p1->num=i+1;
p2->next=p1;
// p2=p1;
}
}
p2->next=head;
return(head);
}
void print1109(DN *head)
{
DN *p1,*p2;
int k=1;
p1=p2=head;
while(p2!=p2->next)
{
do
{
if(k!=3)
{
p2=p1;
p1=p1->next;
p2=p2->next;
k++;
}
else
{
p1=p1->next;
p2->next=p1->next;
k=0;
}
}while(k!=3);
}
printf("The last memeber is %d.",p2->num);
}
void Q1109()
{
DN *head;
head=input1109();
// print1109(head);
}
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