C语言网上点餐系统1.0

//2020年3月12日22:28:39
#include<stdio.h>
#include<stdlib.h>

typedef struct foods
{
    int size;
    int capicity;
    int *ptr;
} Food;


void printWelcome();
void showMenu();
void printBill(int nums[], int len);
//定义主菜单
char menu[4][5][20] = {
    {"红烧排骨 30￥", "油焖大虾 28￥", "黄焖牛肉 35￥", "肉末茄子 22￥", "鱼香肉丝 20￥"},
    {"米饭      4￥", "面条      5￥", "馒头      3￥", "水饺     10￥", "包子     10￥"},
    {"百事可乐  7￥", "可口可乐  8￥", "王老吉    6￥", "加多宝    5￥", "果粒橙    9￥"},
    {"水果布丁 10￥", "牛奶布丁  9￥", "水果捞    8￥", "桂花糕    6￥", "南瓜饼    6￥"}
};
//定义价位表
int price[4][5] = {
    {30, 28, 35, 22, 20},
    {4, 5, 3, 10, 10},
    {7, 8, 6, 5, 9},
    {10, 9, 8, 6, 6}
};
int main()
{
    //定义用户输入的一级菜单编号
    int order1;
    //定义用户输入的二级菜单编号
    int order2;
    //定义数量
    int num = 0;
    //定义消费金额
    int money = 0;
    //创建一个动态以为数组,存储用户输入的编号
    // int *nums;
    // int len = 0;
    // nums = (int *)malloc(sizeof(int)*len);
    // char *foods;
    int res;
    printWelcome();
    printf("请您点餐,中间用空格隔开\n");
    printf("\n");
    showMenu();
    Food food;
    food.capicity = 6;
    food.size = 0;
    // food.ptr = (int *) malloc(food.capicity * sizeof(int));
    food.ptr = (int *)calloc(food.capicity, sizeof(int));
    // gets(foods);
    // puts(foods);
    while (scanf("%d", &res) == 1)
    {
        food.ptr[food.size] = res;
        food.size++;
        if(food.size == food.capicity) {
            food.ptr = (int *)realloc(food.ptr, food.capicity*2*sizeof(int));
            food.capicity = food.capicity*2;
        }
    }
    for (int i = 0; i < food.size; i++)
    {
        // printf("%d ",food.ptr[i]);
        money = money + price[(food.ptr[i]-1) / 5][(food.ptr[i]-1) % 5];
    }
    // printf("money = %d", money);
    printBill(food.ptr, food.size);
    printf("总计消费: %d ￥\n", money);
    return 0;
}
//打印欢迎标语
void printWelcome(){
    printf("****************************************************************************************************************\n");
    printf("*                                  TomHe快餐店,欢迎您点餐                                                      *\n");
    printf("\n");
}
//打印菜单
void showMenu(){
    int order = 1;
    for(int i = 0; i < 4; i++) {
    for(int j = 0; j < 5; j++){
        printf("%-2d%s\t\t",order,menu[i][j]);
        order++;
    }
    printf("\n");
    printf("\n");
}
}
//打印账单
void printBill(int nums[], int len){
    printf("您的消费账单如下：\n\n");
    // printf("菜名\t\t单价\n");
    for (int i = 0; i < len; i++)
    {
        // printf("%d. ",len);
        printf("%s\n\n",menu[(nums[i]-1) / 5][(nums[i]-1) % 5]);
        // printf("%s\t",price[(nums[i]-1) / 5][(nums[i]-1) % 5]);
    }
    
}