1.Swift
A.continue break都作用于当层循环
B.break是跳出当层循环
C.continue是跳过当层循环的某次循环，继续下次循环
D.return直接返回，后面的语句不再执行
F.循环控制语句中跳出指定某层循环:findAnswer为任意字符串

 func sample() -> () {
        //findAnswer可以指定跳出某层循环
        findAnswer: for i in 0...10 {
            
            print("i:\(i)")
            for j in 0...10 {
                
                if j == 5 {
                    break findAnswer
                }
                print("j:\(j)")
                
            }
        }

    }