报错 改了还是
本帖最后由 ～风介～ 于 2015-10-13 20:16 编辑#include<stdio.h>
#include<malloc.h>
#include<stdlib.h>
#defineLEN sizeof(struct student)//student 结构的大小
structstudent *creat();
structstudent *del(struct student *head,int num); //del 函数用于删除结点， *head 即是链表
structstudent *add(struct student *head,struct student *stu_2);//需要被插入的链表
// 待插入的结构的地址
void print(struct student *head);//打印链表
struct student
{
int num;
float score;
structstudent *next;
};
int n;
void main()
{
struct student *stu,*p,stu_2;
int n;
stu = creat();
p = stu;
print(p);
printf("Please enter the num to delete:");
scanf("%d",&n);
print(del (p,n) );
printf("Please enter the num to add:");
scanf("%d",&stu_2.num);
printf("Please input the score to add: ");
scanf("%f",&stu_2.score);
p = add(stu,&stu_2);
print(p);
printf("\n\n");
system ("pause");
}
structstudent *creat()
{
struct student *head;
struct student *p1,*p2;
p1 = p2 = (struct student *)malloc(LEN);
printf("Please enter the num:");
scanf("%d",&p1->num);
printf("Please enter the score:");
scanf("%f",&p1->score);
head = NULL;
n = 0;
while (p1-> num)
{
n++;
if(1 == n)
{
head = p1;
}
else
{
p2->next = p1;
}
p2=p1;
p1=(struct student *)malloc(LEN);
printf("\nPlease enter the num:");
scanf("%d",&p1->num);
printf("Please enter the score:");
scanf("%f",&p1->score);
}
p2->next = NULL;
return head;
}
structstudent *add(struct student *head,struct student *stu_2)
{
struct student *p0,*p1,*p2;
p1 = head;
p0 = stu_2;
if(NULL == head)
{
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;
}
else
{
p2->next = p0;
}
p0->next = p1;
}
else
{
p1->next = p0;
p0->next = NULL;
}
}
n = n+1;
return head;
}
structstudent *del(struct student *head,int num)
{
struct student *p1,*p2;
if(NULL == head)
{
printf("\nThis list is null!\n");
goto END;
}
p1 = head;
while(p1 -> num!= num && p1->next !=NULL)
{
p2 = p1;
p1 = p1->next;
}
if(num == p1->num)
{
if(p1 == head) //当要删除的结点位于有结点的时候
{
head = p1->next;
}
else //一般情况
{
p2->next = p1->next;
}
printf("\nDelete NO:%d succeed!\n",num);
n = n-1; //n 是作为一个全局变量，用来记录链表的数据数
}
else
{
printf("%d not been found!\n",num);
}
END:
return head;
}
void print(struct student *head)
{
struct student *p;
printf("\nThere are %d records!\n\n",n);
p=head;
if(head)
{
do
{
printf("学号为%d的成绩是:%f\n",p->num,p->score);
p = p->next;
}while(p);
}
} 报错在ADD 模块 楼主放关键代码啊 康小泡 发表于 2015-10-13 16:05
楼主放关键代码啊
报错了没改对
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