Question

c语言创建了一个单链表,然后输出,结果都正确,但为什么我报错

#include "stdio.h"
#include "malloc.h"
typedef struct node{
char info;
struct node *next;
}HeadLink;
HeadLink *cyclecreat(){
HeadLink *head,*q,*p;
char c;
head=(HeadLink *)malloc(sizeof(HeadLink));
head=NULL;
q=NULL;
while((c=getchar())!='\n'){
p=(HeadLink *)malloc(sizeof(HeadLink));
p->info=c;
if(head==NULL)
head=q=p;
else{
q->next=p;
q=p;
}
}
return head;
}
void print(HeadLink *head){
HeadLink *p;
p=head;
printf("\n");
while(p){
putchar(p->info);
putchar(' ');
p=p->next;
}
}
void main(){
HeadLink *head;
head=cyclecreat();
print(head);
}

Answer 1

个人感觉这样可以：
HeadLink *cyclecreat(){
HeadLink *head,*q,*p;
char c;
head=(HeadLink *)malloc(sizeof(HeadLink));
head=NULL;
while((c=getchar())!='\n'){
p=(HeadLink *)malloc(sizeof(HeadLink));
p->info=c;
//p->next=NULL;
if(head==NULL)
head=q=p;
else{
q->next=p;
q=p;
}
}
p->next=NULL;//在链表建立完毕后为最后一个节点地址存储位置定为空
return head;
}

Answer 2

HeadLink *cyclecreat(){
HeadLink *head,*q,*p;
char c;
head=(HeadLink *)malloc(sizeof(HeadLink));
head=NULL;
q=NULL;
while((c=getchar())!='\n'){
p=(HeadLink *)malloc(sizeof(HeadLink));
p->info=c;
p->next=NULL;/*注意这里*/
if(head==NULL)
head=q=p;
else{
q->next=p;
q=p;
}
}
return head;
}

Answer 3

请问报错的内容是什么？

Answer 4

不因该吧