Ternary conditional operator in Swift - Mini Project: Build & Apply

Using the Ternary Conditional Operator in Swift

📖 Scenario: Imagine you are building a simple app that checks if a person is old enough to vote. You want to decide if the person can vote or not based on their age.

🎯 Goal: You will create a program that uses the ternary conditional operator to decide if a person is eligible to vote. The program will print "Can vote" if the person is 18 or older, and "Cannot vote" if younger.

📋 What You'll Learn

Create a variable called age with the value 20

Create a variable called votingStatus that uses the ternary conditional operator to check if age is 18 or more

Use the ternary conditional operator with the condition age >= 18

Set votingStatus to "Can vote" if true, otherwise "Cannot vote"

Print the value of votingStatus

💡 Why This Matters

🌍 Real World

Ternary operators help make quick decisions in code, like checking user age for permissions or showing different messages.

💼 Career

Understanding ternary operators is useful for writing clean and concise code in app development and many programming tasks.

1

Create the age variable

Create a variable called age and set it to the integer value 20.

Swift

# Create a variable called age and set it to 20
# Your code here

Need a hint?

Use var age = 20 to create the variable.

2

Create the votingStatus variable using the ternary operator

Create a variable called votingStatus that uses the ternary conditional operator with the condition age >= 18. Set it to "Can vote" if true, otherwise "Cannot vote".

Swift

var age = 20
# Create votingStatus using ternary operator to check if age >= 18
# Your code here

Need a hint?

Use the syntax condition ? valueIfTrue : valueIfFalse.

3

Use the ternary operator in a simple expression

Make sure the variable votingStatus uses the ternary conditional operator with the exact condition age >= 18 and the exact values "Can vote" and "Cannot vote".

Swift

var age = 20
var votingStatus = age >= 18 ? "Can vote" : "Cannot vote"
# Confirm the ternary operator is used correctly
# Your code here

Need a hint?

Check that the ternary operator uses the condition age >= 18 exactly.

4

Print the votingStatus

Write a print statement to display the value of the variable votingStatus.

Swift

var age = 20
var votingStatus = age >= 18 ? "Can vote" : "Cannot vote"
# Print the votingStatus variable
# Your code here

Need a hint?

Use print(votingStatus) to show the result.