#include <stdio.h>
//#include <stdlib.h>
#include <malloc.h>
#define NULL 0
#define LEN sizeof(struct student)
//#define NULL 0
struct atudent
{
long num;
float score;
struct student *next;
};
int n;
struct student *creat(void)
{
struct student *head;
struct student *p1,*p2;
n=0;
p1=p2=(struct student *)malloc(LEN);
scanf("%1d,%%f",&p1 -> num,&p1 -> score);
head=NULL;
while(p1 -> num!=0)
{
n=n+1;
if(n==1)head=p1;
else p2->next=p1l
p2=p1;
p1=(struct student *)malloc(LEN);
scanf("%d,%f",&p1->num,&p1->score);
}
p2->next=NULL;
return (head);
}
//以上为建立链表
void peint (struct student *head)
{
struct student *p;
printf("\nnow,there %d records are:\n",n);
p=head;
if(head != NULL)
do
{
printf("%1d %5.1f\n",p->num,p->score);
p=p->next;
}
while(p!=NULL);
}
struct student *del(struct student *head,long num)
{
struct student *p1,*p2;
if(head==NULL)
{
printf("\nlist null \n"),
return head;
}
p1=head;
while(num!=p1->num&&p1->next！==NULL)
{
p2=p1;p1=->next;
}
if(num==p1->num)
{
if(p1==head)head=p1->next;
else
p2->next=p1->next;
printf("delete:%1d\n",num);
n=n-1;
}
else printf("%1d not been found!\n",num);
return(head);
}
struct student *insert(struct student *head,struct student *stud)
{
struct student *p0,*p1,*p2;
p1=head;
p0=stud;
if(head==NULL)
{
head=p0;p0->next=NULL;
}
else
{
while((p0->num>p1->num)&&(p1->next!=NULL))
{
p2=p1;
p1=p1->next;
}
if(p0->num<=p1->num)
{
if(head==p1)
head=p0;
p0->next=p1;
}
else
{
p1->next=p0;
p0->next=NULL;
}
}
n=n+1;
return(head);
}
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
int main(int argc, char *argv[]) {
struct student *head,stu;
long del_num;
printf("input:\n");
head=creat();
print(head);
printf("you want to delete number");
scanf("%1d",&del_num);
head=del(head,del_num);
print(head);
printf("\ninput:");
scanf("%1d,%f",&stu.num,&stu.score);
head=insert(head,&stu);
print(head);
// return 0;
}
对了，你没有定义print函数，编译器找不到函数，并且你没有使用过你自己定义的peint函数