求大神帮我把这段代码换成新手入门能看懂的
代码太复杂了，看不懂啊，里面有很多函数都是没见过的#define OK 1
#define ERROR 0
#define True 1
#define False 0
#define NAMELEN 41
#define NOTELEN 101
typedef int bool;
typedef int Status;
typedef struct dish
{
int id;
char name[NAMELEN];
float price;
char classify[NAMELEN];
char summary[NOTELEN];
struct dish *next;
} Dish;
typedef struct
{
Dish *head;
int len;
} DishList;
typedef struct table
{
int id;
char name[NAMELEN];
char classify[NAMELEN];
char summary[NOTELEN];
int maxnum;
int minnum;
float money;
bool east;
//bool settlement;
DishList flist;
struct table *next;
} Table;
typedef struct
{
Table *head;
int len;
} TableList;
这是子函数
Status OrderManage(TableList *TL, DishList *FL)
{
int id,n;
char ch;
char name[NAMELEN];
FILE *fp;
Table *te;
Dish *fe;
Dish *dish;
int select;
int t;
do
{
system("cls");
printf("\t*****************餐厅点餐系统*****************\n");
printf("\t*1.用户点菜 *\n");
printf("\t*2.退/换/添菜 *\n");
printf("\t*3.查询 *\n");
printf("\t*4.结账 *\n");
printf("\t*5.浏览 *\n");
printf("\t*0.返回 *\n");
printf("\t**********************************************\n");
scanf("%d",&select);
fflush(stdin);
switch(select)
{
case 1:
printf("\t\t请输入桌台编号:");
scanf("%d", &id);
fflush(stdin);
n = SearchTList(TL, id, &te);
if(n)
{
if(!te->east)
{
DisplayFList(FL);
do
{
printf("\t\t请输入菜品名称(直接回车退出点菜):");
ch = getchar();
if(ch=='\n')
{
printf("\t\t消费总额:%.2f\n", te->money);
break;
}
else
ungetc(ch, stdin);
scanf("%s", name);
fflush(stdin);
n = SearchFListN(FL, name, &fe);
if(n)
{
dish = (Dish *)malloc(sizeof(Dish));
if(!dish)
return ERROR;
*dish = *fe;
if(InsertFList(&te->flist, dish, 1))
{
printf("\t\t点菜成功\n");
te->money += dish->price;
te->east = True;
}
else
printf("\t\t点菜失败\n");
}
else
printf("\t\t没有该菜品");
}
while(ch!='\n');
}
else if(te->east)
printf("\t\t有人正在就餐\n");
}
else
printf("\t\t没有该编号桌台\n");
dish = NULL;
te = NULL;
fe = NULL;
system("pause");
break;
case 2:
printf("\t\t请输入桌台编号:");
scanf("%d", &id);
fflush(stdin);
n = SearchTList(TL, id, &te);
if(n)
{
if(te->east)
{
printf("\t\t当前已点菜品:\n");
DisplayFList(&te->flist);
do
{
printf("\t\t1.添菜\n");
printf("\t\t2.退菜\n");
printf("\t\t3.换菜\n");
printf("\t\t0.返回\n");
printf("\t\t请输入功能序号:");
scanf("%d", &t);
fflush(stdin);
switch(t)
{
case 1:
printf("\t\t请输入菜品名称:");
scanf("%s", name);
fflush(stdin);
n = SearchFListN(FL, name, &fe);
dish = (Dish *)malloc(sizeof(Dish));
if(!dish)
return ERROR;
*dish = *fe;
if(n&&InsertFList(&te->flist, dish, 1))
{
te->money += fe->price;
printf("\t\t添菜成功\n");
printf("\t\t消费总额:%.2f元\n", te->money);
}
else
printf("\t\t添菜失败\n");
fe = NULL;
dish = NULL;
system("pause");
break;
case 2:
printf("\t\t请输入菜品名称:");
scanf("%s", name);
fflush(stdin);
n = SearchFListN(&te->flist, name, &fe);
if(n)
{
DeleteFList(&te->flist, n);
te->money -= fe->price;
printf("\t\t退菜成功\n");
printf("\t\t消费总额:%.2f元\n", te->money);
}
else
printf("\t\t没有点该菜品\n");
fe = NULL;
system("pause");
break;
case 3:
printf("\t\t请输入要被换掉的菜品名称:");
scanf("%s", name);
fflush(stdin);
n = SearchFListN(&te->flist, name, &fe);
if(n)
{
printf("\t\t请输入要换的菜品名称:");
scanf("%s", name);
fflush(stdin);
t = fe->price;
if(SearchFListN(FL, name, &fe))
{
if(DeleteFList(&te->flist, n))
{
dish = (Dish *)malloc(sizeof(Dish));
if(!dish)
return ERROR;
*dish = *fe;
te->money -= t;
if(InsertFList(&te->flist, dish, 1))
{
te->money += dish->price;
printf("\t\t换菜成功\n");
printf("\t\t消费总额:%.2f元\n", te->money);
}
else
printf("\t\t菜已退掉,但添加新菜失败\n");
}
else
printf("\t\t换菜失败\n");
}
else
printf("\t\t没有该菜品\n");
}
else
printf("\t\t没有点该菜品\n");
fe = NULL;
dish = NULL;
system("pause");
break;
case 0:
break;
default:
printf("\t\t序号有误\n");
system("pause");
break;
}
}
while(t);
}
else if(!te->east)
printf("\t\t此桌台无人就餐\n");
}
else
printf("\t\t无此桌台\n");
te = NULL;
fe = NULL;
system("pause");
break;
case 3:
printf("\t\t请输入要查询的桌台号:");
scanf("%d", &id);
fflush(stdin);
if(SearchTList(TL, id, &te))
{
printf("\t\t点菜信息:\n");
DisplayFList(&te->flist);
printf("\t\t消费总额:%.2f元\n", te->money);
}
else
printf("\t\t没有该编号桌台\n");
te = NULL;
fe = NULL;
system("pause");
break;
case 4:
printf("\t\t请输入要结账的桌台号:");
scanf("%d", &id);
fflush(stdin);
if(SearchTList(TL, id, &te))
{
if(te->east)
{
printf("\t\t点菜信息:\n");
DisplayFList(&te->flist);
printf("\t\t消费总额:%.2f元\n", te->money);
SaveSettelment(te);
te->money = 0;
te->east = False;
DestroyFlist(&te->flist);
}
else
printf("\t\t该桌台无人就餐\n");
}
else
printf("\t\t没有该编号桌台\n");
te = NULL;
fe = NULL;
system("pause");
break;
case 5:
fp = fopen("data\\Settlement.dat", "r");
te = (Table *)malloc(sizeof(Table));
if(!fp||!te)
{
printf("\t\t从文件读取失败\n");
}
else
{
while(fscanf(fp, "%d %s %s %s %d %d %f %d ", &te->id, te->name, te->classify, te->summary, &te->maxnum, &te->minnum, &te->money, &t)!=EOF)
{
te->east = False;
InitFList(&te->flist);
while(t--)
{
dish = (Dish *)malloc(sizeof(Dish));
if(!dish)
return ERROR;
fscanf(fp, "%d %s %s %s %f ", &dish->id, dish->name, dish->classify, dish->summary, &dish->price);
InsertFList(&te->flist, dish, 1);
}
InsertTList(&bill, te, 1);
te = (Table *)malloc(sizeof(Table));
if(!te)
return ERROR;
}
}
DisplayBill(&bill);
DestroyTlist(&bill);
free(te);
te = NULL;
fe = NULL;
system("pause");
break;
case 0:
break;
default:
printf("\t\t序号有误\n");
system("pause");
break;
}
}
while(select);
return OK;
}
