Swift 循环

for-in 循环

for index in var {
   循环体
}

import Cocoa

for index in 1...5 {
    print("\(index) 乘于 5 为：\(index * 5)")
}

import Cocoa

var someInts:[Int] = [10, 20, 30]

for index in someInts {
   print( "index 的值为 \(index)")
}

while循环

while condition
{
   statement(s)
}

import Cocoa
 
var index = 10

while index < 20 
{
   print( "index 的值为 \(index)")
   index = index + 1
}

repeat...while 循环

repeat
{
   statement(s);
}while( condition );

import Cocoa

var index = 15

repeat{
    print( "index 的值为 \(index)")
    index = index + 1
}while index < 20

循环控制语句

1. continue
2. break