Control flow redirection (break, continue) - Swift Tutorial

In Swift, control flow redirection is achieved using the break and continue statements. Let's take a look at how they work in different contexts:

1.break statement:

• break is used to terminate a loop or switch statement prematurely.
• In a loop, when break is encountered, the loop is immediately terminated, and the program execution continues after the loop.
• In a switch statement, break is used to exit the switch block once a matching case is found. Without break, the program execution would continue to the next case.

Example of using break in a loop:

for number in 1...10 { 
  if number == 5 { 
    break 
  } 
  print(number) 
} // Output: 1 2 3 4

Example of using break in a switch statement:

let number = 3 
switch number { 
  case 1: 
      print("One") 
  case 2: 
      print("Two") 
  case 3:
      print("Three") 
      break 
  default: 
      print("Other") 
} // Output: Three

2.continue statement:

• continue is used to skip the remaining code in the current iteration of a loop and move to the next iteration.
• When continue is encountered, the loop increments or updates its control variable and starts the next iteration.

Example of using continue in a loop:

for number in 1...10 { 
  if number % 2 == 0 { 
      continue 
  } 
  print(number) 
} 
// Output: 1 3 5 7 9

Both break and continue are powerful control flow statements that help in altering the flow of execution within loops and switch statements.

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