作者查詢 / VictorTom
作者 VictorTom 在 PTT [ C_and_CPP ] 看板的留言(推文), 共10783則
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2F推:大概是不用真的invoke一層又一層的func call吧@_@"11/02 15:48
5F推:感覺沒必要在裡面判斷正負吧?? 要的話在進while前判斷一11/02 11:33
6F→:次, 然後直接取正來算就好了, 更合況其實除以10除到最後11/02 11:34
7F→:number變成0, loop停了也就有結果了....@_@"11/02 11:34
8F→:竟然string法也出現了XD11/02 11:35
10F推:忽然想到, 龜毛一點的話, input 0 的時候要特別處理XD11/02 22:40
7F推:雖然小弟一直記得小學學的自然數包含0(和大家都不同orz)10/31 01:13
8F→:不過題目其實已經限制了a與n都是1~1000, 所以也不用擔心10/31 01:14
9F→:0的問題了....XD10/31 01:15
6F推:推:)10/29 15:47
8F推:從證明結果來看, 直接拿a和n用if判斷就可以給答案了XD10/29 00:12
9F→:一定要有計算過程, 就是套mod那個運算, 最終又能化簡成10/29 00:14
10F→:只用a與a+1的bit0來算, 只是最終都會算出奇數這答案吧.10/29 00:15
11F→:話說, 自然數有沒有包含0啊?_?10/29 00:15
13F→:查了一下Wiki, 含不含0的說法都有說, 而且印象中小學學10/29 00:19
14F→:的時候是包含0的, 因為記憶中自然數與正整數集合就差了10/29 00:19
16F→:有沒有0而已. 不過題目已經有a,n的範圍在1..1000了, 所10/29 00:19
17F→:以只是順便問問XD10/29 00:20
5F推:對不起, 是小弟我的推文造成的誤解吧Orz 本來是回應定義10/28 23:28
6F→:變數那段....Orz10/28 23:29
6F推:應該是每一個 {} 裡. 另外, 一般來說, 程式不會自己跑出10/28 23:10
7F→:你沒有寫code的東西來, 所以除非你在什麼地方讓i設成初10/28 23:11
8F→:始值, 沒有哪個變數會自動變初始狀態@_@"10/28 23:11
9F→:如果不考慮C++ ctor/dtor/ooxx的feature和隱式轉型的話.10/28 23:12
16F推:推p大好神Orz10/28 23:37
5F→:上面那個寫法搭配 Hex 去印其實也就可以了吧??10/28 23:05
2F推:如果是看/讀/寫code, 希望快速追蹤各個symbol的脈絡, 只10/28 23:01
3F→:要code沒有特別的style, SourceInsight應該不錯. 只是它10/28 23:01
4F→:不算是IDE, 因為它不含build code功能, 而且很貴....Orz10/28 23:02
5F→:至於奇怪的style, func ptr太多, 尤其Obj-C, 就會遇到一10/28 23:02
6F→:堆symbol前後resolve不了, 總是得用lookup reference的10/28 23:03
7F→:囧境了....Orz10/28 23:03
1F推:cout << (tm*)st->tm_year;10/26 23:35
2F→:在使用(dereference)之前, 用轉型使之成為正確的type就10/26 23:35
3F→:可以解讀該指標; C++也許有更理想的cast方式, 但小弟不10/26 23:36
4F→:熟XD 用void*的好處是省去傳遞type這件事, 由caller/10/26 23:37
5F→:callee自己橋好被傳遞的型態, 中間如果有轉發層就更不用10/26 23:38
6F→:care真實的型態, 純作interface就好:)10/26 23:38
13F推:編不過請提供err msg, 只講編不過沒人能知道為何~_~10/26 23:51
16F→:慘了, 忘了優先順序嗎?? 早知道就全括號下去....Orz10/26 23:54
22F推:只取偏移還是要轉型回來才能正確解讀資料, 還有void*直10/27 00:06
23F→:接加offset好像是未定義行為吧?_?10/27 00:06
35F推:tm_year's offset是他的敘述, 你要自己換成offset的數值10/27 00:18
36F→:不是讓你直接貼上他的全部推文. 只是, 何必搞這麼複雜,10/27 00:18
37F→:這樣不是一開始就直接轉型成對的比較省事嗎....Orz10/27 00:19
40F推:st是void*, void*不應該直接+-offset, 所以你還是要先對10/27 00:21
42F→:st轉型成其他指標型態, 要用offset通常就轉成char*, 然10/27 00:22
43F→:後才加offset. 另外, 怎麼取出offset又看你的struct的定10/27 00:22
44F→:義而有所不同, 如果可以用OFFSET macro是還好, 不能的話10/27 00:23
45F→:除非你有興趣練習/追根究底, 不然其實不用搞這麼累Orz10/27 00:23