C primer plus 14章课后题--巨人航空公司问题

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#define ture 1
#define false 0
#define SEATCOUNT 12
#define FLIGHTCOUNT  12
#define FNAME_LEN  50
#define LNAME_LEN  50
/*要全局声明*/
char subinput;
int topinput;

typedef struct air_info
{
    int set_num;
    bool isbook;
    char first_name[FNAME_LEN];
    char last_name[LNAME_LEN];
} air_info;
air_info air_info_arr[FLIGHTCOUNT][SEATCOUNT];
air_info (*p)[SEATCOUNT]=air_info_arr;
void init()
{
    int i = 0;
    int j = 0;

    for (i=0; i<FLIGHTCOUNT; i++)
    {
        for(j=0; j<SEATCOUNT; j++)
        {
            air_info_arr[i][j].first_name[FNAME_LEN]="E";
            air_info_arr[i][j].last_name[LNAME_LEN]="E";
            if((j%6)==0)
            {
                //方便测试
                air_info_arr[i][j].isbook=true;
            }
            else
                air_info_arr[i][j].isbook=false;
            air_info_arr[i][j].set_num=j;
        }
    }
}

void show_topmenu()
{
    printf("please choose flight：\r\n");
    printf("0) 102 \r\n");
    printf("1) 311 \r\n");
    printf("2) 444\r\n");
    printf("3) 519\r\n");
    printf("4) Quit\r\n");
}

/**
* 描述: 展示菜单
*输入：无
*返回值：无
* 作者: 飞猪
* 日期:2019-12-19
*/

void show_submenu()
{
    printf("To choose a function，enter its letter label：\r\n");
    printf("a)Show number of empty seats\r\n");
    printf("b)Show list of empty seats\r\n");
    printf("c)Show alphabetical list of seats\r\n");
    printf("d)Assign a customer to，a seat assignment\r\n");
    printf("e)Delete a seat assignment\r\n");
    printf("f)Quit\r\n");
}
/**
* 描述: 显示空座位的数量
*输入：结构体指针
*返回值：无
* 作者: 飞猪
* 日期: 2019-12-19
*
*/

int show_num(struct air_info (*p)[SEATCOUNT])
{
    // printf("测试%d\r\n",p[0].isbook);
    int j = 0;
    int count = 0;
    for(j=0; j<SEATCOUNT; j++)
    {
        if((p[topinput][j]).isbook==false)
            count++;
    }
    printf("%d航班的空座位号数量为%d\r\n",i,count);
    count = 0;
    printf("\r\n");
    main();
}
/**
* 描述: 显示详细的空座位列表
* 输入：结构体指针
* 返回值：无
* 作者: 飞猪
* 日期: 2019-12-19
**/

int show_list(struct air_info (*p)[SEATCOUNT])
{
    // printf("测试%d\r\n",p[0].isbook);
    int j = 0;
    for(j=0; j<SEATCOUNT; j++)
    {
        if((p[topinput][j]).isbook==false)
            printf("空座位号为%d\r\n",(p[topinput][j]).set_num);
    }

    printf("\r\n");
    main();

}
/**
* 描述: 根据传入的结构体指针，分配座位
*输入：结构体指针
*返回值：无
* 作者: 飞猪
* 日期:2019-12-19
*
*/
void assign_seat(struct air_info (*p)[SEATCOUNT])
{
    int j = 0;
    char ch;
    char tepm_fname[FNAME_LEN];
    char tepm_lname[LNAME_LEN];
    printf("please input your information:\r\n");
    printf("please input first name:\r\n");
    gets(tepm_fname);
    printf("please input last name:\r\n");
    gets(tepm_lname);
    for(j=0; j<SEATCOUNT; j++)
    {
        if(p[topinput][j].isbook==false)
        {
            printf("your seat number is %d \r\n",(p[topinput][j]).set_num);
            printf("are you sure  booking this seat? Y/N ");
            scanf(" %c", &ch);
            while (ch=='Y')
            {
                printf("your set is : %d\r\n",(p[topinput][j]).set_num);
                (p[topinput][j]).isbook=true;
                strcpy(p[topinput][j].first_name,tepm_fname);
                strcpy(p[topinput][j].last_name,tepm_lname);
                printf("your first_name is : %s\r\n",p[topinput][j].first_name);
                printf("your last_name is : %s\r\n",p[topinput][j].last_name);
                main();
            }

        }

    }

    printf("\r\n");

}
/*
*描述：根据传入的结构体指针，删除预定
*输入：结构体指针
*返回值：无
*作者：飞猪
*修改日期：2019-12-19
*/

void delete_assign(struct air_info (*p)[SEATCOUNT])
{
    char del_fir[FNAME_LEN];
    int j = 0;
    printf("please input the first name you will delete\r\n");
    gets(del_fir);
    for(j = 0; j<SEATCOUNT; j++)
    {
        if(!(strcmp((p[topinput][j]).first_name,del_fir)))
        {
            (p[topinput][j]).first_name[FNAME_LEN]="E";
            (p[topinput][j]).last_name[LNAME_LEN]="E";
            (p[topinput][j]).isbook=false;
            printf("delete",(p[topinput][j]).set_num);
            printf("delete sucess!\r\n");
            break;
        }
        else
        {
            printf("can not find the name that you input,please input again!\r\n");
        }
    }

    printf("\r\n");
    main();
}
/**
* 描述: 快速排序算法
* 输入：左区间 右区间
* 返回值：无
* 作者: 飞猪
* 日期: 2019-12-19
**/

void quick_sort(int left,int right)
{
    int a[SEATCOUNT];
    if(left>=right)
        return ;
    int i=left;
    int j=right;
    int key=a[i];
    while(i<j)
    {
        while(i<j&&key<=a[j])
            j--;
        a[i]=a[j];
        while(i<j&&key>=a[i])
            i++;
        a[j]=a[i];
    }
    a[i]=key;
    quick_sort(left,i-1);
    quick_sort(i+1,right);

}
/**
* 描述: 原题中为按字母排序（其实就是ascii码），这里修改为按座位号排序
* 输入：结构体指针
* 返回值：無
* 作者: 飞猪
* 日期: 2019-12-19
**/

void show_num_list(struct air_info (*p)[SEATCOUNT])
{
    int j = 0;
    quick_sort(p[topinput][0].set_num,p[topinput][SEATCOUNT].set_num);
    printf("seat has been sorted\r\n");
    for(j=0; j<SEATCOUNT; j++)
        printf("set_num:%d\e\n",p[topinput][j].set_num);
}


int main()
{

    topinput=0;
    init();
    show_topmenu();
    gets(&topinput);
    switch(topinput)
    {
    case'0':
            show_submenu();
        break;
    case'1':
            show_submenu();
        break;
    case'2':
            show_submenu();
        break;
    case'3':
            show_submenu();
        break;
    case'4':
            return -1 ;
        break;
    }
    printf("please input your selection: ");
    gets(&subinput);
    switch(subinput)
    {
    case'a':
            show_num(air_info_arr);
        break;
    case'b':
            show_list(air_info_arr);
        break;
    case'c':
            show_num_list(air_info_arr);
        break;
    case'd':
            assign_seat(air_info_arr);
        break;
    case'e':
            delete_assign(air_info_arr);
        break;
    case'f':
            return -1 ;
        break;
    }
    return 0;
}