1097.txt

里面有4个代码

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#include "stdio.h"
#include "stdlib.h"
#define LEN sizeof(struct student)

struct student
{
     long num;
     int score;
     struct student *next;
};

struct student *creat(int n)
{ 
     struct student *head=NULL,*p1=NULL,*p2=NULL;
     int i;
     for(i=1;i<=n;i++)
     {  p1=(struct student *)malloc(LEN);
        scanf("%ld",&p1->num);    
        scanf("%d",&p1->score);    
        p1->next=NULL;
        if(i==1) head=p1;
        else p2->next=p1;
        p2=p1;
      }
      return(head);
}

void print(struct student *head)
{
    struct student *p;
    p=head;
    while(p!=NULL)
    {
        printf("%8ld%8d",p->num,p->score);
        p=p->next;
        printf("\n");
    }
}

struct student *del(struct student *head,long num)
{
    struct student *p1,*p2;
       p1=head;
    while(num!=p1->num && p1->next!=NULL)
      {
         p2=p1;
         p1=p1->next;
      }
    if(num==p1->num)
	{
	  if(p1==head)
		  head=p1->next;
	  else
		  p2->next=p1->next;
	}
	return (head);

}

main()
{
    struct student *creat(int n);
    void print(struct student *head);
    struct student *del(struct student *head,long num);
    struct student *head;
    int n;
    long del_num;
    scanf("%d",&n); 
    head=creat(n);
    print(head);
    scanf("%ld",&del_num);
    head=del(head,del_num);
    print(head);
}