Control Flow in Swift

In Swift, control flow structures enable developers to determine the flow of execution based on different conditions. Let's explore some commonly used control flow statements in Swift:

If Statement

The if statement is used to perform a block of code if a certain condition is true. It can be followed by an optional else clause to handle the case when the condition is false.

  let temperature = 25

  if temperature > 30 {
    document.write("It's a hot day!")
  } else {
    document.write("It's a pleasant day.")
  }
  

Switch Statement

The switch statement allows you to check a value against multiple possible matching patterns. It provides a concise way to handle multiple cases without the need for lengthy if-else statements.

  let dayOfWeek = "Monday"

  switch dayOfWeek {
    case "Monday":
      document.write("It's the start of the week.")
    case "Friday":
      document.write("It's finally Friday!")
    default:
      document.write("Enjoy your day!")
  }
  

For-In Loop

The for-in loop is used to iterate over a sequence, such as an array or a range of numbers. It executes a block of code for each element in the sequence.

  let fruits = ["Apple", "Banana", "Orange"]

  for fruit in fruits {
    document.write(fruit)
  }
  

While Loop

The while loop repeats a block of code as long as a specified condition is true.

  var count = 0

  while count < 5 {
    document.write(count)
    count += 1
  }
  

Conclusion

Control flow structures in Swift, such as if statements, switch statements, loops, and more, provide developers with the ability to control the flow of execution based on different conditions. Understanding and effectively using these control flow statements is essential for writing efficient and flexible Swift code.