Short variable declaration in Go - Mini Project: Build & Apply

Short Variable Declaration in Go

📖 Scenario: Imagine you are writing a simple Go program to store and display information about a fruit.

🎯 Goal: You will create variables using Go's short variable declaration syntax and print their values.

📋 What You'll Learn

Use short variable declaration to create variables

Use the exact variable names and values given

Print the variables to show their values

💡 Why This Matters

🌍 Real World

Short variable declaration is a common and concise way to create variables in Go programs, useful in many real-world applications like data processing and web development.

💼 Career

Understanding short variable declaration is essential for Go developers to write clean and efficient code, a skill valued in software engineering jobs.

1

Create variables using short variable declaration

Use Go's short variable declaration to create a variable fruit with the value "apple" and a variable quantity with the value 5.

Go

// Use short variable declaration to create fruit and quantity
// Your code here

Need a hint?

Use := to declare and assign variables in one step.

2

Add a variable for price

Add a short variable declaration for a variable price with the value 0.99.

Go

package main

import "fmt"

func main() {
	fruit := "apple"
	quantity := 5
	// Declare price variable here
	// Your code here
}

Need a hint?

Remember to use := for short variable declaration.

3

Calculate total cost

Create a new variable totalCost using short variable declaration that multiplies quantity and price.

Go

package main

import "fmt"

func main() {
	fruit := "apple"
	quantity := 5
	price := 0.99
	// Calculate totalCost here
	// Your code here
}

Need a hint?

Convert quantity to float64 before multiplying with price.

4

Print the total cost

Use fmt.Printf to print the message: Total cost for 5 apples is $4.95 using the variables quantity, fruit, and totalCost. Format totalCost to two decimal places.

Go

package main

import "fmt"

func main() {
	fruit := "apple"
	quantity := 5
	price := 0.99
	totalCost := float64(quantity) * price
	// Print the total cost message
	// Your code here
}

Need a hint?

Use fmt.Printf with %d for integers, %s for strings, and %.2f for floating numbers with two decimals.