Introducing conditionals

At times, you'll want to execute different code blocks based on a condition, such as in the following scenarios:

• Choosing between different room types at a hotel. The price for bigger rooms would be higher.
• Switching between different payment methods at an online store. Procedures for different payment methods would be different.
• Deciding what to order at a fast-food restaurant. Preparation procedures for each food item would be different.

To do this, you would use conditionals. In Swift, this is implemented using the if statement (for a single condition) and the switch statement (for multiple conditions).

Important information

For more information on conditionals, visit https://docs.swift.org/swift-book/LanguageGuide/ControlFlow.html.

Let's look at how if statements are used to execute different tasks depending on a condition's value in the next section.

Using if statements

An if statement executes a block...