用链表存储学生信息

#include<stdio.h>
#include<stdlib.h>
typedef struct student{
    
    
  int num;
 char name[100];
 int grade;
 struct student *next;
}*point;
point creatNde(){
    
    
 int num,n=0;
 scanf("%d",&num);
  point p=(point)malloc(sizeof(struct student));
  point head=p;
while(num!=0){
    
    
  p->num=num;
  scanf("%s",p->name);
  scanf("%d",&p->grade);
  p->next=(point)malloc(sizeof(struct student));
  p=p->next;
  scanf("%d",&num);
  n++;
}
p->next=NULL;
return head;
}
int average(point p){
    
    
int sum=0,n=0;
  while(p->next!=NULL){
    
    
  sum=sum+p->grade;
  n++;
  p=p->next;
}
return sum/n;
}
void option(point p,int average){
    
    
while(p->next!=NULL){
    
    
  if(p->grade>average){
    
    
  printf("%d ",p->num);
  printf("%d ",p->grade);
  printf("%s ",p->name);
  printf("\n");
}
p=p->next;
}
}

int main(){
    
    
point p=creatNde();
int m=average(p);
option(p,m);


}