Logical operators in Go - Mini Project: Build & Apply

Logical operators

📖 Scenario: You are helping a store manager decide which products to restock based on their sales and stock levels.

🎯 Goal: Build a Go program that uses logical operators to find products that need restocking.

📋 What You'll Learn

Create a map called products with product names as keys and their stock counts as values.

Create a map called sales with product names as keys and their sales counts as values.

Create a variable called restockThreshold to set the minimum stock level before restocking.

Use a for loop with variables product and stock to iterate over products.

Inside the loop, use an if statement with logical operators && and || to check if a product's stock is below restockThreshold or if sales are high.

Print the names of products that need restocking.

💡 Why This Matters

🌍 Real World

Stores often need to decide which products to order more of based on current stock and sales trends.

💼 Career

Understanding logical operators and data structures like maps is essential for roles in software development, data analysis, and inventory management systems.

1

Create the products map

Create a map called products with these exact entries: "Apples": 50, "Bananas": 20, "Cherries": 0, "Dates": 15.

Go

var products = map[string]int{
    // Your code here
}

Need a hint?

Use map[string]int to create a map with string keys and int values.

2

Create the sales map and restock threshold

Create a map called sales with these exact entries: "Apples": 30, "Bananas": 50, "Cherries": 5, "Dates": 10. Also create an integer variable called restockThreshold and set it to 20.

Go

package main

import "fmt"

func main() {
    products := map[string]int{"Apples": 50, "Bananas": 20, "Cherries": 0, "Dates": 15}
    // Your code here
}

Need a hint?

Use the same map syntax as before for sales. Use := to create restockThreshold.

3

Use logical operators to find products to restock

Use a for loop with variables product and stock to iterate over products. Inside the loop, use an if statement with logical operators && and || to check if stock is less than restockThreshold or if sales[product] is greater than 30. If so, add the product to a slice called toRestock.

Go

package main

import "fmt"

func main() {
    products := map[string]int{"Apples": 50, "Bananas": 20, "Cherries": 0, "Dates": 15}
    sales := map[string]int{"Apples": 30, "Bananas": 50, "Cherries": 5, "Dates": 10}
    restockThreshold := 20

    // Your code here
}

Need a hint?

Use range to loop over the map. Use append to add to the slice.

4

Print the products to restock

Write a for loop with variable product to iterate over toRestock and print each product.

Go

package main

import "fmt"

func main() {
    products := map[string]int{"Apples": 50, "Bananas": 20, "Cherries": 0, "Dates": 15}
    sales := map[string]int{"Apples": 30, "Bananas": 50, "Cherries": 5, "Dates": 10}
    restockThreshold := 20

    toRestock := []string{}
    for product, stock := range products {
        if stock  30 {
            toRestock = append(toRestock, product)
        }
    }

    // Your code here
}

Need a hint?

Use for _, product := range toRestock to loop over the slice and fmt.Println(product) to print.