c语言超市管理系统源代码

设计一个完整的超市管理系统需要大量的代码，并且由于涉及到数据库、图形界面等复杂的部分，无法在这里完整地提供源代码。但我可以为你提供一个简单的C语言超市管理系统的框架，你可以根据自己的需求进行扩展和修改。这个例子假设你只需要一个控制台界面，没有数据库连接。

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

// 商品结构体
typedef struct {
    int id;
    char name[50];
    float price;
    int quantity;
} Product;

// 超市结构体
typedef struct {
    Product* products;
    int numProducts;
} Supermarket;

// 初始化超市
Supermarket* initializeSupermarket(int numProducts) {
    Supermarket* supermarket = (Supermarket*)malloc(sizeof(Supermarket));
    supermarket->products = (Product*)malloc(numProducts * sizeof(Product));
    supermarket->numProducts = numProducts;
    return supermarket;
}

// 添加商品
void addProduct(Supermarket* supermarket, int id, const char* name, float price, int quantity) {
    if (supermarket != NULL) {
        if (supermarket->numProducts > 0) {
            supermarket->products[id].id = id;
            snprintf(supermarket->products[id].name, sizeof(supermarket->products[id].name), "%s", name);
            supermarket->products[id].price = price;
            supermarket->products[id].quantity = quantity;
        } else {
            printf("Error: Supermarket not initialized with products.\n");
        }
    } else {
        printf("Error: Supermarket not initialized.\n");
    }
}

// 显示所有商品
void displayProducts(Supermarket* supermarket) {
    if (supermarket != NULL) {
        printf("ID\tName\tPrice\tQuantity\n");
        for (int i = 0; i < supermarket->numProducts; ++i) {
            printf("%d\t%s\t%.2f\t%d\n", supermarket->products[i].id,
                   supermarket->products[i].name,
                   supermarket->products[i].price,
                   supermarket->products[i].quantity);
        }
    } else {
        printf("Error: Supermarket not initialized.\n");
    }
}

// 主程序
int main() {
    Supermarket* supermarket = initializeSupermarket(5);

    // 添加一些商品
    addProduct(supermarket, 0, "Product1", 10.99, 100);
    addProduct(supermarket, 1, "Product2", 5.49, 50);
    addProduct(supermarket, 2, "Product3", 3.99, 200);
    addProduct(supermarket, 3, "Product4", 7.79, 75);
    addProduct(supermarket, 4, "Product5", 2.49, 120);

    // 显示所有商品
    displayProducts(supermarket);

    // 释放内存
    free(supermarket->products);
    free(supermarket);

    return 0;
}

如前所述，购物车管理： 允许用户将商品添加到购物车、从购物车中删除商品，并计算购物车中商品的总价。

c
// 购物车结构体
typedef struct {
    Product* products;
    int numProducts;
} ShoppingCart;

// 初始化购物车
ShoppingCart* initializeShoppingCart(int numProducts) {
    ShoppingCart* cart = (ShoppingCart*)malloc(sizeof(ShoppingCart));
    cart->products = (Product*)malloc(numProducts * sizeof(Product));
    cart->numProducts = 0;
    return cart;
}

// 添加商品到购物车
void addToCart(ShoppingCart* cart, Supermarket* supermarket, int productId, int quantity) {
    if (cart != NULL && supermarket != NULL) {
        if (productId >= 0 && productId < supermarket->numProducts) {
            if (quantity <= supermarket->products[productId].quantity) {
                // 添加商品到购物车
                int cartIndex = cart->numProducts;
                cart->products[cartIndex] = supermarket->products[productId];
                cart->products[cartIndex].quantity = quantity;
                cart->numProducts++;

                // 减少超市库存
                supermarket->products[productId].quantity -= quantity;
            } else {
                printf("Error: Not enough quantity in the supermarket.\n");
            }
        } else {
            printf("Error: Invalid product ID.\n");
        }
    } else {
        printf("Error: Cart or supermarket not initialized.\n");
    }
}

// 显示购物车内容
void displayCart(ShoppingCart* cart) {
    if (cart != NULL) {
        printf("ID\tName\tPrice\tQuantity\n");
        for (int i = 0; i < cart->numProducts; ++i) {
            printf("%d\t%s\t%.2f\t%d\n", cart->products[i].id,
                   cart->products[i].name,
                   cart->products[i].price,
                   cart->products[i].quantity);
        }
    } else {
        printf("Error: Cart not initialized.\n");
    }
}

用户登录： 允许用户登录，以便跟踪购物历史、管理账户信息等。

数据库连接： 将商品信息和用户信息存储在数据库中，以便长期保存。

图形用户界面： 使用图形界面代替控制台界面，提供更友好的用户体验。