Arithmetic operators in Go - Mini Project: Build & Apply

Arithmetic Operators in Go

📖 Scenario: You are helping a small shop calculate the total cost of items bought by a customer. You will use arithmetic operators to add, subtract, multiply, and divide numbers.

🎯 Goal: Build a Go program that uses arithmetic operators to calculate the total price after applying a discount and tax.

📋 What You'll Learn

Create variables for item price and quantity

Create a variable for discount percentage

Calculate the total price before discount

Calculate the discount amount using arithmetic operators

Calculate the final price after discount and tax

Print the final price

💡 Why This Matters

🌍 Real World

Calculating prices with discounts and taxes is common in shopping and billing systems.

💼 Career

Understanding arithmetic operators is essential for programming tasks involving calculations, finance, and data processing.

1

Create initial variables for price and quantity

Create two variables called price and quantity with values 50 and 3 respectively.

Go

package main

import "fmt"

func main() {
    // Create variables price and quantity
    // Your code here
}

Need a hint?

Use := to create variables and assign values in Go.

2

Add a discount percentage variable

Add a variable called discountPercent and set it to 10 to represent a 10% discount.

Go

package main

import "fmt"

func main() {
    price := 50
    quantity := 3
    // Add discountPercent variable
    // Your code here
}

Need a hint?

Remember to use := to declare and assign the variable.

3

Calculate total price and discount amount

Calculate the total price before discount as totalPrice by multiplying price and quantity. Then calculate the discount amount as discountAmount by multiplying totalPrice by discountPercent divided by 100.

Go

package main

import "fmt"

func main() {
    price := 50
    quantity := 3
    discountPercent := 10
    // Calculate totalPrice and discountAmount
    // Your code here
}

Need a hint?

Use * for multiplication and / for division.

4

Calculate final price and print it

Calculate the final price as finalPrice by subtracting discountAmount from totalPrice and then adding 5% tax. Print the finalPrice using fmt.Println.

Go

package main

import "fmt"

func main() {
    price := 50
    quantity := 3
    discountPercent := 10
    totalPrice := price * quantity
    discountAmount := totalPrice * discountPercent / 100
    // Calculate finalPrice and print it
    // Your code here
}

Need a hint?

Calculate tax as 5% of the discounted price and add it. Use fmt.Println to show the result.