你们都来看看这个程序哪里错了？ 急
#include<stdio.h>
#include<stdlib.h>
#define MENU_NUM_MAX 100 // 假设有100种菜式
#define LEN sizeof(struct MenuInfo)
struct MenuInfo
{
int ID;
char MenuName[20];
float price;
}Menu[MENU_NUM_MAX];
/* 基础数据维护 */
void AddMenu()
{
FILE *fp;
int menu_num;
printf("\t\t 你要添加多少种菜?:");
scanf("%d",&menu_num);
for(int i=0;i<menu_num;i++)
{
printf("\n"); // added this line
printf("\t\t请搜索输入ID:");
scanf("%d",&Menu[i].ID);
printf("\t\t请输入菜名:");
scanf("%s",Menu[i].MenuName);
printf("\t\t请输入[%s]菜的价格:",Menu[i].MenuName);
Menu[i].price=0.0f; //initial float price
scanf("%f",&Menu[i].price);
fflush(stdin);
}
if((fp=fopen("MenuInfo.dat","ab"))==NULL) // open binary file
{
printf("Can't open file\n");
exit(1);
}
for(int j=0;j<menu_num;j++)
{
if(fwrite(&Menu[j],LEN,1,fp)!=1) //writing data to binary file
printf("Error writing file.\n");
}
fclose(fp); // close file point
}
void DisplayMenuInfo()
{
FILE *fp;
printf("\n\t\tID 菜名\t\t价格\n"); // column headings
if((fp=fopen("MenuInfo.dat","rb"))==NULL) // open binary file
{
printf("Can't open file\n");
exit(1);
}
int i=0;
do
{
fseek(fp,i*LEN,SEEK_SET); // move file head location
if(fread(&Menu[i],LEN,1,fp)) // read data save to structure variable
{
printf("\t\t%d %5s\t\t%5.1f元\n",Menu[i].ID,Menu[i].MenuName,Menu[i].price);
i++;
}
}while(!feof(fp));
fclose(fp);
}
void DeleteToMenu()
{
FILE *fp;
int MenuID;
int todelete=-1;
int i=0;
printf("请输入要删除的菜名的ID:");
scanf("%d",&MenuID);
/* load or reload the file and check that record with that ID exists */
if((fp=fopen("MenuInfo.dat","rb"))==NULL) // open binary file
{
printf("Can't open file\n");
exit(1);
}
do
{
fseek(fp,i*LEN,SEEK_SET); // move file head location
if(fread(&Menu[i],LEN,1,fp))
{
if (Menu[i].ID==MenuID) todelete=i;
i++;
}
}while(!feof(fp));
fclose(fp);
if (todelete==-1)
{
printf("A menu with that ID doesn't exist\n");
}
else
{
/* write records back to file excluding one to be deleted */
if((fp=fopen("MenuInfo.dat","wb"))==NULL) // open binary file
{
printf("Can't open file\n");
exit(1);
}
for(int j=0;j<i;j++)
{
if (j==todelete) continue; /* skip record to be deleted */
if(fwrite(&Menu[j],LEN,1,fp)!=1) //writing data to binary file
printf("Error writing file.\n");
}
fclose(fp); // close file point
}
}
void FindMenu()
{
FILE *fp;
int MenuID;
bool find_mark=false;
printf("\n\t\t请输入你要查找的菜名ID:");
scanf("%d",&MenuID);
printf("\n\t\tID 菜名\t\t价格\n"); // column headings
if((fp=fopen("MenuInfo.dat","rb"))==NULL) // open binary file
{
printf("Can't open file\n");
exit(1);
}
int i=0;
do
{
fseek(fp,i*LEN,SEEK_SET); // move file head location
fread(&Menu[i],LEN,1,fp); // read data save to structure variable
if(Menu[i].ID==MenuID)
{
printf("\t\t%d %5s\t\t%5.1f元\n",Menu[i].ID,Menu[i].MenuName,Menu[i].price);
find_mark=true;
break;
}
i++;
}while(!feof(fp));
if(!find_mark) printf("\n\t 尊敬的客户:我们餐厅没有你要点的菜喔,你可以试试我们的招牌菜啊^-^.\n");
fclose(fp);
}
/* 基础数据维护完毕 */
// sc.cpp主文件
#include <stdio.h>
#include <stdlib.h>
#include "mm.h"
void main(void)
{
//AddMenu();
//DisplayMenuInfo();
//FindMenu();
}
