这是一个图书录入程序   将其录入到book.txt文件中   编译连接都没有问题    就是运行到一半出问题  求大神修改    谢谢！！！
#include "stdio.h"
#include "string.h"
#include "stdlib.h"
#define N 100
struct bookinf
{
    char name[20];
    int price1;
    int price2;
    char author[20];
    int year;
    int month;
    int day;
    char number;   
};

void main()
{
    FILE *fp;
    char input;
    int i,n;
    struct bookinf book[N];
    for(i=0;i<=N;i++)
    {
        printf("请输入图书信息(以#结束):\n");
        printf("\n书名:");
        scanf("%s",book[i].name);
        if(strcmp(book[i].name,"#")==0) break;
        printf("\n作者:");
        scanf("%s",book[i].author);
        printf("\n出版年月日(如1993-02-06):");
        scanf("%d-%d-%d",&book[i].year,&book[i].month,&book[i].day);
        printf("\n价格:");
        scanf("%d.%d",&book[i].price1,&book[i].price2);
        printf("\n书号:");
        scanf("%s",book[i].number);
    }
    n=i;
    fp=fopen("book.txt","w");
    for(i=0;i<=n;i++)
    {
        fputs(book[i].name,fp);
        putc(book[i].price1,fp);
        putc(book[i].price2,fp);
        fputs(book[i].author,fp);
        putc(book[i].year,fp);
        putc(book[i].month,fp);
        putc(book[i].day,fp);
        fputs(book[i].number,fp);
    }
    printf("此次共输入%d本书",n);
}

谢谢大神   可以加你好友么？？？我正在学c语言   有些问题请您方便的时候解答一下

i<=N怎么了？？