Programming in Swift: Fundamentals

Oct 19 2021 Swift 5.5, iOS 15, Xcode 13

Part 3: Control Flow

20. For Loops

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Previous episode: 19. Challenge: While Loops Next episode: 21. Challenge: For Loops

Update Notes: The student materials have been reviewed and are updated as of October 2021.

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So far, you’ve learned how to control the flow of execution in your apps using the decision-making powers of if statements and the while loop.

let closedRange = 0...5

let halfOpenRange = 0..<5

var usefulValue = 5

let closedRange = 0...usefulValue

let halfOpenRange = 0..<usefulValue


var sum = 0

let count = 10

for i in 1...count {
  
}

  sum += i 

i = 20

for _ in 1...count {
  print("roar")
}

for _ in 1...count where count > 100 {
  print("roar")
}

for i in 1...count { 

}

for i in 1...count {
   print("\(i) is an odd number.")
}

5 % 2

for i in 1...count where i % 2 == 1 {