Array length in Go - Mini Project: Build & Apply

Array length

📖 Scenario: You are working on a program that needs to know how many items are in a list of fruits. This is common when you want to count things in real life, like how many apples you have in a basket.

🎯 Goal: Build a Go program that creates an array of fruits, then finds and prints the length of that array.

📋 What You'll Learn

Create an array called fruits with exactly these values: "apple", "banana", "cherry", "date"

Create a variable called length that stores the length of the fruits array

Print the value of length to show how many fruits are in the array

💡 Why This Matters

🌍 Real World

Counting items in a list is common in many programs, like counting products in a shopping cart or names in a guest list.

💼 Career

Knowing how to find the length of arrays or lists is a basic skill for programming jobs that involve data processing or user input.

1

Create the fruits array

Create an array called fruits with these exact string values: "apple", "banana", "cherry", "date"

Go

# Create the fruits array with the given values
# Your code here

Hint

Use square brackets with the number 4 to create an array of 4 strings.

2

Create the length variable

Create a variable called length that stores the length of the fruits array using the built-in len function

Go

package main

func main() {
    fruits := [4]string{"apple", "banana", "cherry", "date"}
    // Create length variable to store the length of fruits
    // Your code here
}

Hint

Use len(fruits) to get the number of items in the array.

3

Print the length

Use fmt.Println to print the value of the length variable

Go

package main

import "fmt"

func main() {
    fruits := [4]string{"apple", "banana", "cherry", "date"}
    length := len(fruits)
    // Print the length variable
    // Your code here
}

Hint

Use fmt.Println(length) to show the number of fruits.

4

Run the program to see the output

Run the program and observe the output. It should print the number 4 because there are four fruits in the array.

Go

package main

import "fmt"

func main() {
    fruits := [4]string{"apple", "banana", "cherry", "date"}
    length := len(fruits)
    fmt.Println(length) // This will print the length
}

Hint

The program should print 4 because there are four items in the array.