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Iterating Over Arrays

Part of the Fundamentals section of Coddy's GO journey — lesson 72 of 109.

You can iterate through arrays using a for loop with an index.

Create an array of weekdays:

weekdays := [5]string{"Monday", "Tuesday", "Wednesday", "Thursday", "Friday"}

Iterate through the array using a for loop:

for i := 0; i < len(weekdays); i++ {
    fmt.Println(i, weekdays[i])
}

This displays each element with its index:

0 Monday
1 Tuesday
2 Wednesday
3 Thursday
4 Friday

Challenge

Beginner

In this challenge, you'll practice iterating over an array of fruits using a for loop. The array is already defined for you. Your task is to complete the for loop to print each fruit in the array on a new line.

Cheat sheet

You can iterate through arrays using a for loop with an index:

weekdays := [5]string{"Monday", "Tuesday", "Wednesday", "Thursday", "Friday"}

for i := 0; i < len(weekdays); i++ {
    fmt.Println(i, weekdays[i])
}

This displays each element with its index.

Try it yourself

package main

import "fmt"

func main() {
	// Array of fruits
	fruits := [5]string{"Apple", "Banana", "Orange", "Grape", "Mango"}
	
	// TODO: Complete the for loop to print each fruit in the array
	for i := 0; i < len(fruits); i++ {
		// Add your code here to print each fruit
		
	}
}

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Fundamentals

1Introduction to Go

What is Go?Hello World Println Go Comments

4Comparison & Logical Operators

Comparison Operators - Part 1 Comparison Operators - Part 2 Logical AND Operator Logical OR Operator Logical NOT Operator Operator Precedence Basics Recap - Making Comparisons

7Control Flow: Loops

What The `for` Loop Explained For Loop - Basic For Loop - Condition Only The `break` Keyword The `continue` Keyword Nested Loops Recap - Repeating Actions

10Composite Types: Arrays

Introduction to Arrays Declaring Arrays Initializing Arrays Accessing Array Elements Array Length with `len`Iterating Over ArraysMulti-dimensional Arrays

13Composite Types: Structs

Defining Custom Types Creating Struct Instances Accessing Struct Fields Pointers to Structs Initializing Structs Embedded Structs Anonymous Structs Recap - Custom Data Structures

2Variables and Basic Data Types

What is a variable Type Inference with `:=`Integers (int)Floating-Point Numbers Booleans Strings Zero Values Constants Naming Conventions Recap - Variables and Types

5Basic Input/Output

Formatted Output Format Verbs Printing Types Getting Basic User Input Recap - Input and Output

8Functions

Understanding Functions Declaring a Function Calling Functions Function Parameters Returning a Single Value Returning Multiple Values Named Return Values Function Scope Basics Recap - Creating Reusable Code

11Composite Types: Slices

Introduction to Slices Declaring Slice Literals Creating Slices with `make`Slice Length vs Capacity Accessing Slice Elements Appending Elements Slicing Existing Slices/Arrays Iterating Over Slices Copying Slices Recap - Dynamic Lists

14Basic Error Handling

The Concept of Errors The `error` Interface Functions Returning Errors Checking for Errors Creating Simple Errors Creating Formatted Errors Basic Error Handling Recap - Handling Problems