Recap - True or False

Part of the Fundamentals section of Coddy's Swift journey — lesson 36 of 86.

Challenge

Easy

Read a string input and determine whether it represents a "truthy" or "falsy" value.

You will receive the following input:

A single line containing a string (e.g., "yes", "no", "1", "0")

Use readLine() to read the input and safely unwrap it with if let. Then check the value:

If the input is "yes", "true", or "1", print true
If the input is "no", "false", or "0", print false

Print: Either true or false based on the input value

Try it yourself

// Read input
if let input = readLine() {
    // TODO: Write your code below
    // Check if input is "yes", "true", "1" -> print true
    // Check if input is "no", "false", "0" -> print false
    
}

All lessons in Fundamentals

1Introduction

The Language Hello World!Comments

4Operators Part 1

Arithmetic Operators Modulo Operator Compound Assignment Recap - Simple Math Comparison Operators

7Basic IO

Print Function String Interpolation ReadLine Input Type Conversion Recap - Till 120Recap - True or False

10Functions

Declare A Function Parameters And Arguments Return Values Argument Labels Recap - Sigma Function Recap - Validation Function Default Values

13Iterating Over Sequences

Iterating Over Elements The Enumerated Method Iterating Over Strings P1 Iterating Over Strings P2

16Final Challenges

Flat Asterisk Pyramid Pattern Finder What To Buy

2Variables

Let vs Var Type Annotations Numbers String Boolean Naming Conventions Recap - Initialize Variables

5Operators Part 2

Logical Operators Part 1 Logical Operators Part 2 Recap - Simple Logic Logical Operators Part 3 Ternary Operator

8Bill Split Calculator

Welcome Message Getting Input

Calculating Tip And Total

Splitting The Bill

Formatted Output

11FizzBuzz with a Twist

Game Overview The FizzBuzz Function

Looping The Numbers

Adding The Twist

14Arrays Advanced

Array Slicing Part 1 Array Slicing Part 2 Sequence Operators The Contains Method