By GokiSoft.com|
13:57 28/10/2021|
C Sharp
Bài 2: Chương trình quản lý sản phẩm - Product - Lập Trình C# - Lập Trình C Sharp
Tạo class Product gồm các thuộc tính:
- Tên hàng hóa
- Nhà sản xuất
- Giá bán
+ Tạo 2 constructor cho lớp này.
+ Cài đặt hàm nhập và hiển thị.
Tạo class ProductMenu, khai báo hàm main và tạo menu sau:
1. Nhập thông tin cho n sản phẩm
2. Hiển thị thông tin vừa nhập
3. Sắp xếp thông tin giảm dần theo giá và hiển thị
4. Thoát.
Tags:
Phản hồi từ học viên
5
(Dựa trên đánh giá ngày hôm nay)
![Nguyễn Hùng Anh [community,C2009G]](https://www.gravatar.com/avatar/32d1c530d2d2c1f3cd46282949f78ebf.jpg?s=80&d=mm&r=g){kind=avatar}
Nguyễn Hùng Anh
2021-10-07 04:01:17
#Product.cs
using System;
using System.Collections.Generic;
using System.Text;
namespace Lesson02
{
class Product
{
public string Name { get; set; }
public string Manufactor { get; set; }
private int _price;
public int Price
{
get
{
return _price;
}
set
{
if(value >= 0)
{
this._price = value;
} else
{
Console.WriteLine("Price must > 0");
}
}
}
public Product()
{
}
public Product(string name, string manufactor, int price)
{
Name = name;
Manufactor = manufactor;
Price = price;
}
public void Input()
{
Console.WriteLine("Enter product's name: ");
Name = Console.ReadLine();
Console.WriteLine("Enter product's manufactor: ");
Manufactor = Console.ReadLine();
Console.WriteLine("Enter product's price: ");
Price = int.Parse(Console.ReadLine());
}
public void Display()
{
Console.WriteLine(this);
}
public override string ToString()
{
return "Name: " + Name + ", Manufactor: " + Manufactor + ", Price: " + Price;
}
}
}
#ProductMenu.cs
using System;
namespace Lesson02
{
class ProductMenu
{
static Product[] productList;
static void Main(string[] args)
{
Menu();
}
static void Menu()
{
Product product = new Product();
int c;
int n;
do
{
ShowMenu();
c = int.Parse(Console.ReadLine());
switch(c)
{
case 1:
Input();
break;
case 2:
Display();
break;
case 3:
SortByPrice();
Display();
break;
case 4:
Console.WriteLine("Thoat!!!");
break;
default:
Console.WriteLine("Nhap sai!!!");
break;
}
} while (c != 4);
}
static void Input()
{
Console.WriteLine("Nhap so luong san pham: ");
int n = int.Parse(Console.ReadLine());
productList = new Product[n];
for (int i = 0; i < n; i++)
{
Product product = new Product();
product.Input();
productList[i] = product;
}
}
static void Display()
{
foreach(Product product in productList)
{
product.Display();
}
}
static void SortByPrice()
{
Array.Sort<Product>(productList, (p1, p2) => {
if(p1.Price > p2.Price)
{
return -1;
}
return 1;
});
}
static void ShowMenu()
{
Console.WriteLine("1. Nhap thong tin cho n san pham");
Console.WriteLine("2. Hien thi thong tin san pham");
Console.WriteLine("3. Sap xep thong tin giam dan theo gia va hien thi");
Console.WriteLine("4. Thoat");
Console.WriteLine("Chon: ");
}
}
}
![Hieu Ngo [community,C2009G]](https://www.gravatar.com/avatar/cee2973101b9cf9580ef561ff3eeecf0.jpg?s=80&d=mm&r=g){kind=avatar}
Hieu Ngo
2021-10-07 03:50:33
#Product.cs
using System;
using System.Collections.Generic;
using System.Text;
namespace Product
{
class Product
{
public string Productname { get; set; }
public string Manufacturer { get; set; }
private float _price;
public float Price
{
get
{
return _price;
}
set
{
if(value >= 0 )
{
this._price = value;
} else
{
Console.WriteLine("price >= 0");
}
}
}
public Product()
{
}
public Product(string productName, string manufacturer, float price)
{
Productname = productName;
Manufacturer = manufacturer;
Price = price;
}
public void Input()
{
Console.WriteLine("Nhap ten hang: ");
Productname = Console.ReadLine();
Console.WriteLine("Nhap ten nha san xuat: ");
Manufacturer = Console.ReadLine();
Console.WriteLine("Nhap gia ban:");
Price = float.Parse(Console.ReadLine());
}
public void Display()
{
Console.WriteLine(this);
}
public override string ToString()
{
return "Ten Hang: " + Productname + ", Nha san xuat: " + Manufacturer + ", price: " + Price;
}
}
}
#Program.cs
using System;
using System.Collections.Generic;
namespace Product
{
class Program
{
static void Main(string[] args)
{
List<Product> list = new List<Product>();
int x;
do
{
Menu();
Console.WriteLine("Nhap so ban chon:");
x = int.Parse(Console.ReadLine());
switch (x)
{
case 1:
Console.WriteLine("Nhap n:");
int n = int.Parse(Console.ReadLine());
for (int i = 0; i < n; i++)
{
Product product = new Product();
product.Input();
list.Add(product);
}
break;
case 2:
foreach (Product product in list)
{
product.Display();
}
break;
case 3:
list.Sort((p1, p2) => {
return p2.Price.CompareTo(p1.Price);
});
Console.WriteLine("After sort:");
foreach(Product product in list)
{
product.Display();
}
break;
case 4:
return;
}
} while (x >= 1 && x <= 4);
}
static void Menu()
{
Console.WriteLine("1.Nhập thông tin cho n sản phẩm");
Console.WriteLine("2.Hiển thị thông tin vừa nhập");
Console.WriteLine("3.Sắp xếp thông tin giảm dần theo giá và hiển thị");
Console.WriteLine("4.Thoát.");
}
static int sort(Product product1, Product product2)
{
return product1.Price.CompareTo(product2.Price);
}
}
}
![Kim Văn Thiết [community,AAHN-C2009G]](https://www.gravatar.com/avatar/a6fe3c0fba887fdd75f4bdc95b86b1f7.jpg?s=80&d=mm&r=g){kind=avatar}
Kim Văn Thiết
2021-09-25 05:10:16
static void bai2()
{
ProductMenu menu = new ProductMenu();
menu.Input();
menu.Display();
}
class Product: IComparable<Product>
{
string ProductName { get; set; }
string Manufactor { get; set; }
private int _Price;
int Price
{
get
{
return _Price;
}
set
{
if(value < 0)
{
Console.WriteLine("Gia ban phai > 0!");
return;
}
_Price = value;
}
}
public Product()
{
}
public Product(string productname, string manu, int price)
{
this.ProductName = productname;
this.Manufactor = manu;
this.Price = price;
}
public virtual void Input()
{
Console.WriteLine("Nhap ten san pham: ");
ProductName = Console.ReadLine();
Console.WriteLine("Nhap ten nha san xuat: ");
Manufactor = Console.ReadLine();
Console.WriteLine("Nhap gia ban: ");
Price = int.Parse(Console.ReadLine());
}
public virtual void Display()
{
Console.WriteLine(ToString());
}
public string ToString()
{
return "Ten San Pham : " + ProductName + "\nTen Nha San Xuat:" + Manufactor + "\n Gia ban :" + Price;
}
public int CompareTo(Product p)
{
return p.Price.CompareTo(this.Price);
}
}
class ProductMenu : Product
{
private List<Product> p = new List<Product>();
public override void Input()
{
Console.WriteLine("Enter number of Product: ");
int n = int.Parse(Console.ReadLine());
for(int i = 0; i < n; i++)
{
Console.WriteLine("Nhap thong tin san pham thu {0}",i+1);
Product sp = new Product();
sp.Input();
p.Add(sp);
}
}
public override void Display()
{
p.Sort();
foreach(Product pt in p)
{
pt.Display();
Console.WriteLine();
}
}
}![Hoàng Thiện Thanh [community,AAHN-C2009G]](https://www.gravatar.com/avatar/58e377dde293f6da38c0b5168578557a.jpg?s=80&d=mm&r=g){kind=avatar}
Hoàng Thiện Thanh
2021-09-23 15:47:13
#Program.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ProductManager
{
class Product : IComparable<Product>
{
public string ProductName { get; set; }
public string Manufacturer { get; set; }
private double price;
public double Price { get
{
return price;
}
set
{
while (value < 0)
{
Console.WriteLine("Price cannot be below 0");
Console.WriteLine("Enter Price again: ");
value = int.Parse(Console.ReadLine());
}
this.price = value;
}
}
public Product()
{
}
public Product(string _ProductName, string _Manufacturer, double _Price)
{
this.ProductName = _ProductName;
this.Manufacturer = _Manufacturer;
this.Price = _Price;
}
public virtual void input()
{
Console.Write("\nEnter Product Name: ");
ProductName = Console.ReadLine();
Console.Write("\nEnter Manufacturer: ");
Manufacturer = Console.ReadLine();
Console.Write("\nEnter Price: ");
Price = int.Parse(Console.ReadLine());
}
public virtual void display()
{
Console.WriteLine("\nProduct Name: {0}\nProducer: {1}\nPrice: {2}", ProductName, Manufacturer, Price);
}
public virtual int CompareTo(Product other)
{
if (this.Price.CompareTo(other.Price) > 0)
{
return this.Price.CompareTo(other.Price);
}
else
{
return 0;
}
}
}
class ProductMenu : Product
{
List<Product> AllProducts = new List<Product>();
List<int> ID = new List<int>();
private int n;
public int N { set {
while (value <= 0)
{
Console.WriteLine("Maximum number need to be above 0");
value = int.Parse(Console.ReadLine());
}
this.n = value;
}
get
{
return n;
}
}
public override void input()
{
Console.WriteLine("Please enter number of products:");
N = int.Parse(Console.ReadLine());
for (int i = 0; i < n; i++)
{
var count = i + 1;
Console.WriteLine("Product[{0}]", count);
Console.WriteLine("Please enter Product Name: ");
ProductName = Console.ReadLine();
Console.WriteLine("Please enter manufacturer: ");
Manufacturer = Console.ReadLine();
Console.WriteLine("Please enter price: ");
Price = int.Parse(Console.ReadLine());
var p = new Product(ProductName, Manufacturer, Price);
AllProducts.Add(p);
ID.Add(count);
}
}
public override void display() {
for (int i = 0; i < AllProducts.Count; i++)
{
Console.WriteLine("Product[{0}] Product Name: {1}, Manufacturer: {2}, Price:{3}", ID[i] , AllProducts[i].ProductName, AllProducts[i].Manufacturer, AllProducts[i].Price);
}
}
public void sort_Product_By_Price_desc()
{
AllProducts.Sort((a, b) => b.CompareTo(a));
for (int i = 0; i < AllProducts.Count; i++)
{
Console.WriteLine("Product[{0}] Product Name: {1}, Manufacturer: {2}, Price:{3}", ID[i], AllProducts[i].ProductName, AllProducts[i].Manufacturer, AllProducts[i].Price);
}
}
}
class Program
{
static void Main(string[] args)
{
ProductMenu m = new ProductMenu();
m.input();
m.display();
Console.WriteLine("Sorted by Price in descending order:");
m.sort_Product_By_Price_desc();
}
}
}
![Nguyễn Việt Hoàng [community,AAHN-C2009G]](https://www.gravatar.com/avatar/bdbde8074d82148dcda6927ccb016466.jpg?s=80&d=mm&r=g){kind=avatar}
Nguyễn Việt Hoàng
2021-09-23 15:46:28
#product.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Ss2
{
class product : IComparable<product>
{
public string Name { get; set; }
public string Producer { get; set; }
private int _price;
public int Price {
get
{
return this._price;
}
set
{
while(value <= 0)
{
Console.WriteLine("Price must be > 0 ");
Console.WriteLine("Enter Price :");
value = int.Parse(Console.ReadLine());
}
this._price = value;
}
}
public product()
{
}
public product(string name, string producer, int price)
{
this.Name = name;
this.Producer = producer;
this.Price = price;
}
public virtual void input()
{
Console.WriteLine("Enter Name :");
Name = Console.ReadLine();
Console.WriteLine("Enter Producer :");
Producer = Console.ReadLine();
Console.WriteLine("Enter Price :");
Price = int.Parse(Console.ReadLine());
}
public virtual void display()
{
Console.WriteLine("Name :{0} , Producer :{1} , Price :{2}", Name, Producer, Price);
}
public int CompareTo(product other)
{
if(this.Price.CompareTo(other.Price) > 0)
{
return this.Price.CompareTo(other.Price);
}else
{
return 0;
}
}
}
}
#productMenu.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Ss2
{
class productMenu : product
{
List<product> save = new List<product>();
//List<int> cPr = new List<int>();
public productMenu()
{
}
public override void input()
{
int count = 0, i = 0;
Console.WriteLine("Enter Sum products :");
int sum = int.Parse(Console.ReadLine());
while(sum <= 0)
{
Console.WriteLine("Sum must be > 0 ");
Console.WriteLine("Enter Sum products :");
sum = int.Parse(Console.ReadLine());
}
int[] sumPrd = new int[sum];
do
{
count = i + 1;
Console.WriteLine("Enter Product [" + count + "] :");
//cPr.Add(count);
base.input();
product c = new product(Name, Producer, Price);
save.Add(c);
i++;
} while (i < sum);
}
public override void display()
{
Console.WriteLine("Products :");
// foreach (int j in cPr)
// {
// Console.Write("Products[{0}]", j);
// }
foreach(product i in save)
{
Console.WriteLine("Name :{0} , Producer :{1} , Price :{2}", i.Name, i.Producer, i.Price);
}
}
public void display_by_des_price()
{
Console.WriteLine("Sort by des price :");
save.Sort((a,b) => b.CompareTo(a));
foreach (product i in save)
{
Console.WriteLine("Name :{0} , Producer :{1} , Price :{2}", i.Name, i.Producer, i.Price);
}
}
static void Main(string[] args)
{
productMenu a = new productMenu();
a.input();
a.display();
a.display_by_des_price();
}
}
}
![Triệu Văn Lăng [T2008A]](https://www.gravatar.com/avatar/1348e3562c6492c26f796cb1f45982a1.jpg?s=80&d=mm&r=g){kind=avatar}
Triệu Văn Lăng
2021-05-21 06:54:17
#Product.cs
using System;
using System.Collections.Generic;
using System.Text;
namespace bai1495
{
class Product
{
public string NameProduct { get; set; }
public string NSX { get; set; }
public float Price { get; set; }
public Product() { }
public Product (string NameProduct, string NSX, float Price)
{
this.NameProduct = NameProduct;
this.NSX = NSX;
this.Price = Price;
}
public void input()
{
Console.WriteLine("Nhap ten hang hoa: ");
NameProduct = Console.ReadLine();
Console.WriteLine("Nhap nha san xuat: ");
NSX = Console.ReadLine();
Console.WriteLine("Nhap gia ban: ");
Price = float.Parse(Console.ReadLine());
}
public void display()
{
Console.WriteLine("Ten hang hoa: {0}, Nha san xuat: {1}, Gia ban: {2}", NameProduct, NSX, Price);
}
}
}
#Program.cs
using System;
using bai1495;
using System.Collections.Generic;
namespace bai1495
{
class ProductMenu
{
static void Main(string[] args)
{
List<Product> PrList = new List<Product>();
int choose;
int n;
do
{
Menu();
choose = Convert.ToInt32(Console.ReadLine());
switch(choose)
{
case 1:
Console.WriteLine("Nhap so hang hoa can them: ");
n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++)
{
Product product = new Product();
Console.WriteLine("Nhap thong tin san pham thu {0}", i + 1);
product.input();
PrList.Add(product);
}
break;
case 2:
Console.WriteLine("---Thong tin san pham---");
for(int i = 0; i < PrList.Count; i++)
{
Console.WriteLine("San pham thu {0}", i + 1);
PrList[i].display();
}
break;
case 3:
for (int i = 0; i < PrList.Count - 1; i++)
{
for(int j = i + 1; j < PrList.Count; j++)
{
if (PrList[i].Price < PrList[j].Price)
{
Product tmp = PrList[i];
PrList[i] = PrList[j];
PrList[j] = tmp;
}
}
}
Console.WriteLine("Thong tin san pham sau khi sap xep: ");
for (int i = 0; i < PrList.Count; i++)
{
PrList[i].display();
}
break;
case 4:
Console.WriteLine("Thoat");
break;
default:
Console.WriteLine("Nhap lai");
break;
}
} while (choose != 4);
}
static void Menu()
{
Console.WriteLine("1. Nhap thong tin cho n san pham");
Console.WriteLine("2. Hien thi thong tin");
Console.WriteLine("3. Sap xep thong tin");
Console.WriteLine("4. Thoat");
Console.WriteLine("Moi chon");
}
}
}
![Do Trung Duc [T2008A]](https://www.gravatar.com/avatar/2973ac07124f066b4605c535e8d39a99.jpg?s=80&d=mm&r=g){kind=avatar}
Do Trung Duc
2021-05-21 03:26:04
using System;
using System.Collections.Generic;
using System.Text;
namespace Lessson3.ProductManager
{
class Product
{
public string Name { get; set; }
public string Manufacture { get; set; }
public float Price { get; set; }
public Product()
{
}
public Product(string Name, string Manufacture, float Price)
{
this.Name = Name;
this.Manufacture = Manufacture;
this.Price = Price;
}
public void Input()
{
Console.WriteLine("Nhap ten san pham:");
Name = Console.ReadLine();
Console.WriteLine("Nhap nha san xuat san pham:");
Manufacture = Console.ReadLine();
Console.WriteLine("Nhap gia san pham:");
Price = float.Parse(Console.ReadLine());
}
public void Display()
{
Console.WriteLine("Ten san pham: {0}, Nha san xuat: {1}, Gia ban: {2}", Name, Manufacture, Price);
}
}
}
Do Trung Duc
2021-05-21 03:25:52
using System;
using System.Collections.Generic;
namespace Lessson3.ProductManager
{
class Program
{
static void Main(string[] args)
{
List<Product> ProductList = new List<Product>();
Console.WriteLine("Nhap so luong san pham muon them N = ");
int N = Int32.Parse(Console.ReadLine());
for(int i = 0; i < N; i++)
{
Console.WriteLine("Nhap thong san pham {0} ",i+1);
Product product = new Product();
product.Input();
ProductList.Add(product);
}
for (int i = 0; i < N - 1 ; i++)
{
for(int j = i + 1; j < N ; j++)
{
if (ProductList[i].Price >= ProductList[j].Price) {
Product ProductSwap = ProductList[i];
ProductList[i] = ProductList[j];
ProductList[j] = ProductSwap;
}
}
}
Console.WriteLine("San pham sau khi sap xep gia tu thap den cao nhu sau: ");
for (int i = 0; i < N; i++)
{
ProductList[i].Display();
}
}
}
}
![vuong huu phu [T2008A]](https://www.gravatar.com/avatar/307a5cf29780afab49706dc8b15b86c6.jpg?s=80&d=mm&r=g){kind=avatar}
vuong huu phu
2021-05-19 11:47:37
using System;
using System.Collections.Generic;
using System.Text;
namespace Sanpham
{
class Productcom : IComparer<Product>
{
int IComparer<Product>.Compare(Product x, Product y)
{
if (x.gia > y.gia)
{
return 1;
}
else {
return 1;
}
}
}
}
using System;
using System.Collections.Generic;
using System.Text;
namespace Sanpham
{
class Product
{
public String Name { set; get; }
public String nsx { set; get; }
public int gia { set; get; }
public Product() { }
public Product(String Name, String nsx, int gia)
{
this.Name = Name;
this.nsx = nsx;
this.gia = gia;
}
public void nhap()
{
Console.WriteLine("Ten");
Name = Console.ReadLine();
Console.WriteLine("Nha san xuat");
nsx = Console.ReadLine();
Console.WriteLine("Gia");
gia = Int32.Parse(Console.ReadLine());
}
public void hienthi()
{
Console.Write("Ten : " + Name + ", Nha san xuat : " + nsx + ", Gia : " + gia);
}
}
}
using System;
using System.Collections.Generic;
namespace Sanpham
{
class Program
{
static void Main(string[] args)
{
List<Product> list1 = new List<Product>();
int lc;
do
{
menu();
Console.WriteLine("Nhap lua chon");
lc = Int32.Parse(Console.ReadLine());
switch (lc) {
case 1:
Console.WriteLine("Nhap so luong ");
int n = Int32.Parse(Console.ReadLine());
for (int i = 0; i < n; i++) {
Product p = new Product();
p.nhap();
list1.Add(p);
}
break;
case 2:
for (int i = 0; i < list1.Count; i++) {
list1[i].hienthi();
}
break;
case 3:
list1.Sort(new Productcom());
foreach (Product p in list1) {
p.hienthi();
}
break;
case 4:
Console.WriteLine("Thoat!!!!");
break;
}
} while (lc < 5);
}
public static void menu() {
Console.WriteLine(" 1 Nhap thong tin : ");
Console.WriteLine(" 2 Hien thi");
Console.WriteLine(" 3 Sap xep");
Console.WriteLine(" 4 Thoat");
}
}
}
![Nguyễn Anh Vũ [T2008A]](https://www.gravatar.com/avatar/8863d24ed74b396082becbc4db8331fd.jpg?s=80&d=mm&r=g){kind=avatar}
Nguyễn Anh Vũ
2021-05-19 10:22:47
using System.Collections.Generic;
using System.Text;
namespace Product_Managent
{
class Product
{
public string productName { get; set; }
public string producer { get; set; }
public double price { get; set; }
public Product()
{
productName = null;
producer = null;
price = 0;
}
public Product(string productName ,string producer , double price)
{
this.price = price;
this.producer = producer;
this.productName = productName;
}
public void input()
{
proName();
isproducer();
isPrice();
}
public void display()
{
Console.WriteLine("productName : {0} , producer : {1} , price : {2} ", productName, producer, price);
}
private void proName()
{
bool isName = true;
while (isName)
{
Console.WriteLine("Enter name of product : ");
productName = Console.ReadLine();
if (string.IsNullOrEmpty(productName))
{
Console.WriteLine("errol--> productName is empty!");
}
else
{
isName = false;
}
}
}
private void isproducer()
{
bool isName = true;
while (isName)
{
Console.WriteLine("Enter name of producer : ");
producer = Console.ReadLine();
if (string.IsNullOrEmpty(producer))
{
Console.WriteLine("errol--> productName is empty!");
}
else
{
isName = false;
}
}
}
private void isPrice()
{
bool isName = false;
while (!isName)
{
Console.WriteLine("Enter price of product : ");
string strPrice = Console.ReadLine();
if (!string.IsNullOrEmpty(strPrice))
{
price = double.Parse(strPrice);
if (price >= 0)
{
isName = true;
}
else
{
Console.WriteLine("errol--> (price > 0 )!");
}
}
else
{
Console.WriteLine("errol--> price is empty!");
}
}
}
}
}
