Question

关于c语言链表的问题

#include<stdio.h>
struct book
{
int date;
struct book *next;
};
void creatlist(struct book *head)
{
head->date=0;
head->next=0;
}
void addlist(struct book *head,int date1)
{
struct book *p,*q;
p=head;
while(p->next!=0)
{
p=p->next;
}
q=(struct book*)malloc(sizeof(struct book));
p->next=q;
q->date=date1;
}
main()
{
int i;
struct book *pcbook;
pcbook=(struct book*)malloc(sizeof(struct book));
creatlist(pcbook);
for(i=1;i<5;i++)
{
addlist(pcbook,i);
}
for(i=1;i<5;i++)
{
pcbook=pcbook->next;
printf("%d\t\t%d\n",i,pcbook->date);
}
}

Answer 1

问题挺多，1 添加动态分配内存的头文件#include<malloc.h>
2链表创建错误
3 插入节点错误
4 main函数返回类型为int 程序末尾加return 0;
5 再把书多看几遍

Answer 2

addlist最后加上q->next = NULL;

Answer 3

q->next没有初始化吧