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                # Swift Break 語句 Swift break語句會立刻結束整個控制流的執行。 如果您使用的是嵌套循環(即一個循環內嵌套另一個循環),break 語句會停止執行最內層的循環,然后開始執行該塊之后的下一行代碼。 ### 語法 Swift break語句的語法格式如下: ``` break ``` **流程圖:** ![C break 語句](https://box.kancloud.cn/2015-12-14_566e60d8d190d.jpg) ### 實例 ``` import Cocoa var index = 10 repeat{ index = index + 1 if( index == 15 ){ // index 等于 15 時終止循環 break } print( "index 的值為 \(index)") }while index < 20 ``` 以上程序執行輸出結果為: ``` index 的值為 11 index 的值為 12 index 的值為 13 index 的值為 14 ```
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