Question

c语言，把文件中数据输入到链表中，为何出错？

struct per *readfile(struct per *head,int *n,char address[30])
{
struct per *p= NULL,*pr = head;
FILE *fp = NULL;
if((fp = fopen(address,"r")) == NULL)
{
printf("打开文件失败\n");
exit(0);
}
while(feof(fp) == 0)
{
p = (struct per *)malloc(sizeof(struct per));
if(p == NULL)
{
printf("no");
}
if(head == NULL)
{
head = p;
}
else
{
while(pr->next != NULL)
{
pr = pr->next;
}
pr->next = p;
}
fscanf(fp,"%11lf",&p->number);
fscanf(fp,"%10s",p->name);
fscanf(fp,"%2d",&p->age);
fscanf(fp,"%1d",&p->sex);
fscanf(fp,"%1d",&p->org);
p->next = NULL;
(*n)++;
}
fclose(fp);
return head;
}

Answer 1

调试吧。先不插入到链表中，就直接读取，把前面的注释掉看报什么错