Methods in structs in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a method named greet inside the struct.

Swift

struct Person {
    var name: String
    func [1]() {
        print("Hello, \(name)!")
    }
}

Drag options to blanks, or click blank then click option'

Agreeting

BsayHello

Chello

Dgreet

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method name different from 'greet' will cause the method not to be recognized.

The method name should be greet as defined in the instruction.

2fill in blank

medium

Complete the code to call the greet method on the person instance.

Swift

var person = Person(name: "Anna")
person.[1]()

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Agreet

BsayHello

Chello

Dgreeting

Attempts:

3 left

💡 Hint

Common Mistakes

Calling a method name that does not exist on the struct instance.

To call the method defined as greet, use person.greet().

3fill in blank

hard

Fix the error by completing the method signature to modify the struct's property.

Swift

struct Counter {
    var count = 0
    mutating func [1]() {
        count += 1
    }
}

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Aincrement

Bincrease

CaddOne

Dmutate

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method name that does not match the intended action.

The method name increment clearly indicates increasing the count by one.

4fill in blank

hard

Fill both blanks to create a method that returns a greeting with the person's name.

Swift

struct Person {
    var name: String
    func [1]() -> String {
        return "Hello, \([2])!"
    }
}

Drag options to blanks, or click blank then click option'

Agreet

Bname

CpersonName

DsayHello

Attempts:

3 left

💡 Hint

Common Mistakes

Using a property name that does not exist in the struct.

The method is named greet and it returns a string using the property name.

5fill in blank

hard

Fill all three blanks to define a mutating method that resets the count to zero and returns a message.

Swift

struct Counter {
    var count: Int
    mutating func [1]() -> String {
        count = [2]
        return "Count reset to [3]"
    }
}

Drag options to blanks, or click blank then click option'

Areset

B0

Czero

Dclear

Attempts:

3 left

💡 Hint

Common Mistakes

Using a non-mutating method to change a property.

The method named reset sets count to 0 and returns a message with the word 'zero'.