Lab7

golang/lab7/book.go

@@ -0,0 +1,41 @@
+package lab7
+
+import "fmt"
+
+type Book struct {
+	name string
+	author string
+	price float64
+	description string
+}
+
+func NewBook(name string, author string, price float64, description string) *Book {
+	book := &Book{name: name, author: author, price: price, description: description}
+	return book
+}
+
+func (b *Book) getName() string {
+	return b.name
+}
+
+func (b *Book) setPrice(newPrice float64) {
+	b.price = newPrice
+}
+
+func (b *Book) getPrice() float64 {
+	return b.price
+}
+
+func (b *Book) changeData(name string, price float64, description string) {
+	b.name = name
+	b.price = price
+	b.description = description
+}
+
+func (b *Book) getData() {
+	fmt.Printf("name: %s\nauthor: %s\nprice: %.2f\ndescription: %s\n\n", b.name, b.author, b.price, b.description)
+}
+
+func (b *Book) applyDiscount(perDiscount float64) {
+	b.price = b.price * (1 - (perDiscount / 100))
+}

golang/lab7/clothes.go

@@ -0,0 +1,41 @@
+package lab7
+
+import "fmt"
+
+type Clothes struct {
+	name string
+	brand string
+	price float64
+	description string
+}
+
+func NewClothes(name string, brand string, price float64, description string) *Clothes {
+	clothes := &Clothes{name: name, brand: brand, price: price, description: description}
+	return clothes
+}
+
+func (c *Clothes) getName() string {
+	return c.name
+}
+
+func (c *Clothes) setPrice(newPrice float64) {
+	c.price = newPrice
+}
+
+func (c *Clothes) getPrice() float64 {
+	return c.price
+}
+
+func (c *Clothes) changeData(name string, price float64, description string) {
+	c.name = name
+	c.price = price
+	c.description = description
+}
+
+func (c *Clothes) getData() {
+	fmt.Printf("name: %s\nbrand: %s\nprice: %.2f\ndescription: %s\n\n", c.name, c.brand, c.price, c.description)
+}
+
+func (c *Clothes) applyDiscount(perDiscount float64) {
+	c.price = c.price * (1 - (perDiscount / 100))
+}

golang/lab7/electronics.go

@@ -0,0 +1,41 @@
+package lab7
+
+import "fmt"
+
+type Electronics struct {
+	name string
+	model string
+	price float64
+	description string
+}
+
+func NewElectronics(name string, model string, price float64, description string) *Electronics {
+	electronics := &Electronics{name: name, model: model, price: price, description: description}
+	return electronics
+}
+
+func (e *Electronics) getName() string {
+	return e.name
+}
+
+func (e *Electronics) setPrice(newPrice float64) {
+	e.price = newPrice
+}
+
+func (e *Electronics) getPrice() float64 {
+	return e.price
+}
+
+func (e *Electronics) changeData(name string, price float64, description string) {
+	e.name = name
+	e.price = price
+	e.description = description
+}
+
+func (e *Electronics) getData() {
+	fmt.Printf("name: %s\nmodel: %s\nprice: %.2f\ndescription: %s\n\n", e.name, e.model, e.price, e.description)
+}
+
+func (e *Electronics) applyDiscount(perDiscount float64) {
+	e.price = e.price * (1 - (perDiscount / 100))
+}

golang/lab7/lab7.go

@@ -0,0 +1,56 @@
+package lab7
+
+import (
+	"fmt"
+)
+
+type Products interface {
+	getName() string
+	setPrice(float64)
+	getPrice() float64
+	changeData(string, float64, string)
+	getData()
+	applyDiscount(float64)	
+}
+
+func calculateDiscount(products []Products) float64 {
+	var sum float64 = 0
+	for _, product := range products {
+		sum += product.getPrice()
+	}
+
+	return sum
+}
+
+func RunLab7() {
+	product1 := NewBook("Harry Potter", "JK Rowling", 1000.0, "A book on Harry Potter")
+	product2 := NewClothes("T-shirt", "Nike", 900.0, "Nice T-shirt")
+	product3 := NewElectronics("Lamp", "Diode", 100.0, "Wonderful lamp")
+
+	listOfProduct := []Products{product1, product2, product3}
+
+	fmt.Printf("\nПродукты до изменения\n\n")
+	product1.getData()
+	product2.getData()
+product1.changeData("Improved book Harry Potter", 1500.0, "Interesting book")
+product2.changeData("Premium T-shirt", 1000.0, "A high-quality cotton T-shirt.")
+	fmt.Printf("\nПродукты после изменения\n\n")
+	product1.getData()
+	product2.getData()
+
+	fmt.Println("Товар-----------Цена")
+	for _, product := range listOfProduct {
+		fmt.Printf("%s-------%.2f $\n", product.getName(), product.getPrice())
+	}
+	fmt.Printf("Цена корзины до скидки: %.2f $\n\n", calculateDiscount(listOfProduct))
+
+product1.applyDiscount(10)
+product2.applyDiscount(20)
+product3.applyDiscount(15)
+
+	fmt. Println("Товар-----------Цена")
+	for _, product := range listOfProduct {
+		fmt.Printf("%s-------%.2f $\n", product.getName(), product.getPrice())
+	}
+	fmt.Printf("Цена корзины после скидки: %.2f $\n", calculateDiscount(listOfProduct))
+}

golang/main.go

@@ -1,12 +1,15 @@
 package main 
 
-import ("fmt"
-  "isuct.ru/informatics2022/lab6"
+import (
+  "fmt"
   "isuct.ru/informatics2022/lab4"
+  "isuct.ru/informatics2022/lab6"
+  "isuct.ru/informatics2022/lab7"
 )
 
 func main() {
-	fmt.Println("Krukova Kristina Ivanovna")
-	lab4.AnswerLab4()
-  lab6.RunLab6()
-}
+ fmt.Println("Krukova Kristina Ivanovna")
+ lab4.AnswerLab4()
+ lab6.RunLab6()
+ lab7.RunLab7()
+}