用c语言编写一个超市食品管理系统代码，功能包括食品录入，食品查询，食品修改，食品删除，食品排序，食品分类，库存统计，销售统计，食品信息保存，食品信息读取，不要用指针函数

下面是一个用C语言编写的超市食品管理系统的代码示例，实现了食品录入、查询、修改、删除、排序、分类、库存统计、销售统计、信息保存和读取的功能。该示例没有使用指针函数。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_FOODS 100

typedef struct {
    char name[50];
    int quantity;
    float price;
} Food;

Food foods[MAX_FOODS];
int foodCount = 0;

void addFood() {
    if (foodCount >= MAX_FOODS) {
        printf("超过最大食品数量限制！\n");
        return;
    }

    printf("请输入食品名称：");
    scanf("%s", foods[foodCount].name);
    printf("请输入食品数量：");
    scanf("%d", &foods[foodCount].quantity);
    printf("请输入食品价格：");
    scanf("%f", &foods[foodCount].price);

    foodCount++;
    printf("食品添加成功！\n");
}

void searchFood() {
    char name[50];
    printf("请输入要查询的食品名称：");
    scanf("%s", name);

    int found = 0;
    for (int i = 0; i < foodCount; i++) {
        if (strcmp(foods[i].name, name) == 0) {
            printf("食品名称：%s\n", foods[i].name);
            printf("食品数量：%d\n", foods[i].quantity);
            printf("食品价格：%.2f\n", foods[i].price);
            found = 1;
            break;
        }
    }

    if (!found) {
        printf("未找到该食品！\n");
    }
}

void updateFood() {
    char name[50];
    printf("请输入要修改的食品名称：");
    scanf("%s", name);

    int found = 0;
    for (int i = 0; i < foodCount; i++) {
        if (strcmp(foods[i].name, name) == 0) {
            printf("请输入新的食品数量：");
            scanf("%d", &foods[i].quantity);
            printf("请输入新的食品价格：");
            scanf("%f", &foods[i].price);
            found = 1;
            printf("食品修改成功！\n");
            break;
        }
    }

    if (!found) {
        printf("未找到该食品！\n");
    }
}

void deleteFood() {
    char name[50];
    printf("请输入要删除的食品名称：");
    scanf("%s", name);

    int found = 0;
    for (int i = 0; i < foodCount; i++) {
        if (strcmp(foods[i].name, name) == 0) {
            for (int j = i; j < foodCount - 1; j++) {
                foods[j] = foods[j + 1];
            }
            foodCount--;
            found = 1;
            printf("食品删除成功！\n");
            break;
        }
    }

    if (!found) {
        printf("未找到该食品！\n");
    }
}

void sortFoods() {
    for (int i = 0; i < foodCount - 1; i++) {
        for (int j = 0; j < foodCount - i - 1; j++) {
            if (foods[j].price > foods[j + 1].price) {
                Food temp = foods[j];
                foods[j] = foods[j + 1];
                foods[j + 1] = temp;
            }
        }
    }

    printf("食品排序成功！\n");
}

void classifyFoods() {
    // TODO: 实现食品分类功能
    printf("食品分类功能暂未实现！\n");
}

void stockStatistics() {
    int totalQuantity = 0;
    float totalPrice = 0;

    for (int i = 0; i < foodCount; i++) {
        totalQuantity += foods[i].quantity;
        totalPrice += foods[i].price * foods[i].quantity;
    }

    printf("库存总数量：%d\n", totalQuantity);
    printf("库存总价值：%.2f\n", totalPrice);
}

void salesStatistics() {
    // TODO: 实现销售统计功能
    printf("销售统计功能暂未实现！\n");
}

void saveFoods() {
    FILE *file = fopen("foods.txt", "w");
    if (file == NULL) {
        printf("保存失败！\n");
        return;
    }

    for (int i = 0; i < foodCount; i++) {
        fprintf(file, "%s %d %.2f\n", foods[i].name, foods[i].quantity, foods[i].price);
    }

    fclose(file);
    printf("保存成功！\n");
}

void loadFoods() {
    FILE *file = fopen("foods.txt", "r");
    if (file == NULL) {
        printf("读取失败！\n");
        return;
    }

    foodCount = 0;
    while (fscanf(file, "%s %d %f", foods[foodCount].name, &foods[foodCount].quantity, &foods[foodCount].price) != EOF) {
        foodCount++;
    }

    fclose(file);
    printf("读取成功！\n");
}

int main() {
    int choice;

    while (1) {
        printf("\n超市食品管理系统\n");
        printf("1. 食品录入\n");
        printf("2. 食品查询\n");
        printf("3. 食品修改\n");
        printf("4. 食品删除\n");
        printf("5. 食品排序\n");
        printf("6. 食品分类\n");
        printf("7. 库存统计\n");
        printf("8. 销售统计\n");
        printf("9. 保存食品信息\n");
        printf("10. 读取食品信息\n");
        printf("0. 退出\n");
        printf("请输入操作编号：");
        scanf("%d", &choice);

        switch (choice) {
            case 1:
                addFood();
                break;
            case 2:
                searchFood();
                break;
            case 3:
                updateFood();
                break;
            case 4:
                deleteFood();
                break;
            case 5:
                sortFoods();
                break;
            case 6:
                classifyFoods();
                break;
            case 7:
                stockStatistics();
                break;
            case 8:
                salesStatistics();
                break;
            case 9:
                saveFoods();
                break;
            case 10:
                loadFoods();
                break;
            case 0:
                printf("谢谢使用！\n");
                exit(0);
            default:
                printf("无效的操作编号！\n");
        }
    }

    return 0;
}