#include<stdio.h>
#include<malloc.h>
#define LEN sizeof(struct person)
#define NULL 0
struct person
{
    int num;
    int code;
    struct person *next;
};
int j=1,n=0;

struct person *creat0()
{
    struct person p[13];
    int i;
    i=0;
    while(i<13)
    {
        n++;
        p[i].num=i+1;
        i++;
    }
    return p;
}
//下面的for循环怎么i=n时，i自动变为0
struct person *creat1(struct person p[])
{
    int i;
    for(i=0;i<n;i++)
    {
        p[i].code=j;
        j++;
        if(j==3) j=0;
    }
    return p;
}


void print(struct person head[])
{
    struct person *p;
    printf("Now,these records are:\n");
    if(head!=NULL)
        do{
            printf("%d %d",p->num,p->code);
            p=p->next;
        }while(p!=NULL);
}

struct person *del(struct person head[])
{
    struct person *p1,*p2;
    p1=head;
    while(p1->code!=0&&p1->next!=NULL)
    {
        p2=p1;
        p1=p1->next;
    }
    if(p1->code==0)
    {
        if(p1==head) head=p1->next;
        else p2->next=p1->next;
        n--;
    }
    return head;
}

void main()
{
    struct person *head;
    head=creat0();
    head=creat1(head);
    while(n>1)
    {
        head=del(head);
        head=creat1(head);
    }
    print(head);
}

第二个for语句怎么会无限循环，请问时什么原因

发错了，我想发c语言的