作者查詢 / alan23273850
作者 alan23273850 在 PTT [ C_and_CPP ] 看板的留言(推文), 共320則
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30F推: printf 裡面把星號拿掉就對了01/24 09:57
6F推: 1. argv or 2. two-pass sweep01/07 08:45
23F推: 新手寫linked list,最好先用計算紙清楚討論各種情01/07 08:40
24F→: 況,不然co下去一定錯誤百出01/07 08:40
25F→: 也最好把自己寫的list包成class模組化,較好debug01/07 08:41
3F推: 有沒有可能是權限問題?01/04 17:51
9F→: 要不要上網找 sample code 阿?01/05 16:13
6F→: 可以改一下標題吧,畢竟不是linked list的問題12/30 16:08
5F推: 透過signal是還不錯的方法,不過如果不想碰系統底層12/30 16:04
6F→: 的話其實我有另一個創意方法,你可以設一個全域變數12/30 16:04
7F→: 紀錄程式一開始的時間戳,之後在code會重複執行的地12/30 16:05
8F→: 方插入查詢當下時間戳的code,跟最一開始的全域變數12/30 16:06
9F→: 相減,超過一定的值就代表跑太久,跳出迴圈即可12/30 16:06
10F→: 這樣副作用是會降低程式效率,112我覺得可以弄signa12/30 16:07
36F→: 順帶提醒一下,最好測一下持續查詢時間戳這個動作對12/31 08:47
37F→: 效能的影響,這個有時候會超乎你想像,牽涉到system12/31 08:47
38F→: call的函式都要注意,通常時間比例是關鍵12/31 08:48
55F推: 上面steve大大也有提到一點,如果每次iter時間差不01/01 14:39
56F→: 多的話,也可以用迭代次數取代時間,以省去系統呼叫01/01 14:39
14F推: http://www.programmer-club.com.tw/ShowSameTitleN12/08 02:42
15F→: /c/43591.html12/08 02:42
16F→: 1. fflush只對stdout有定義,所以不可接stdin12/08 02:43
17F→: 2. setbuf是設定接下來的緩衝區模式,並不會清空之12/08 02:44
18F→: 前殘留的緩衝區內容12/08 02:44
19F→: 3. 網站內使用 scanf("%*[^\n]%*c");12/08 02:45
20F→: 反正要清空stdin緩衝區要自己吃就對了,什麼內建函12/08 02:46
21F→: 式都不要用,免得debug底到一肚子氣XD12/08 02:46
1F推: 專業推11/26 13:57
10F推: 這個說法只適用於以前,編譯器優化不佳的年代11/26 13:55
25F推: 現在還有 windows subsystem of linux 呢11/24 19:46
27F推: WSL 比 VM 的優點是可以省去開機時間,又能打小程式11/25 00:47
28F→: 是用正宗的 linux gcc 呢11/25 00:47