#include"conio
h"#include"stdio
h"#include"stdlib
h"#include"string
h"#defineMAX100#defineN3structchaoxiang_type/*日期结构体类型*/{intdanyu;intloucen;};structloupans_type{charnum[8];/*楼号*/charprice[20];/*价格(/㎡)*/charchaoxiang[20];/*面向*/intarea;/*面积*/structchaoxiang_typeweizhi;/*单元信息*/structchaoxiang_typekind;/*类型*/};structuser_type//用户信息结构体{charusername[15],password[15];}user;intnumber;intm;//登录选择/*读取信息模块*/intread_file(structloupans_typeloupan[]){FILE*fp;inti=0;if((fp=fopen("loupans
txt","rt"))==NULL){printf("\n库存文件不存在，请创建
\n");return0;}while(
feof(fp)){fread(&loupan[i],sizeof(structloupans_type),1,fp);if(loupan[i]
num==0)break;elsei++;}fclose(fp);returni;}/*保存信息模块*/voidsave_file(structloupans_typeloupan[],intsum){FILE*fp;inti;if((fp=fopen("loupans
txt","wt"))==NULL){printf("读文件错误\n");return;}for
