# for 迴圈 --- ```cpp= for(1;2;3){ } ``` 進入迴圈會執行第一部分,只執行一次 第二部分類似while 第三部分會在每次大括號執行完畢時執行一次 部分之間用分號隔開 --- 普遍用法 ```cpp= for(int i = 0;i < 5;i++){ } ``` i=0,1,2,3,4 到第5時不合,共執行5次 --- ![](https://i.imgur.com/Wk8D6a5.png) source:https://ithelp.ithome.com.tw/articles/10204155 --- GJ a026~a030 http://www.tcgs.tc.edu.tw:1218/Problems?&page=2
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