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:麻煩這種量的code用置底網站貼一下, 順便附一下測資, 不11/22 15:04
3F→:然就算有網友有心想看, 光cp這些code就覺得煩了說:)11/22 15:04
7F推:t大幫補的code好像有缺漏說Orz 不過的確推t大所言, 先把11/22 15:58
8F→:char都改用unsigned char試試先....:)11/22 15:59
1F→:沒有變數裡沒有值這回事, ch變數佔1 byte的話, 其值必為11/19 02:08
2F→:-128~+127中間的某一個; 但是一個沒有被賦過值的變數其11/19 02:08
3F→:記錄的值為何??就是不知道, 這個例子的情況多半是程式執11/19 02:09
4F→:行時stack裡某塊的殘值; 某些compiler(如VC)會在debug11/19 02:10
5F→:built的binary裡替所有宣告的變數給與特定初值(讓它自己11/19 02:10
6F→:偵錯等用途), 不過基本上不能預期未初始化的區域變數值.11/19 02:12
7F→:小弟不太確定你的"空值"指得是什麼, 基本上應該是1.對:)11/19 02:13
8F→:PS. 或說0x00~0xFF. 這個case只會有無法預期的結果, 並11/19 02:17
9F→:不會有讓程式不能執行的錯誤.11/19 02:18
10F推:兩個 ? 的答案都是對的:)11/19 02:21
11F→:置底十三誡的第一誡就是在講這個東西, 印象中有的11/19 02:22
12F→:compiler也可能會在遇到這種情形時丟warning給你@_@"11/19 02:22
2F推:推~~~~11/19 02:06
10F推:遞迴要小心爆啊XD 單向LL其實還是可以一個迴圈從頭到尾11/17 02:21
11F→:讓整個LL變成反著串回來, 只是要多兩個temp pointer XD11/17 02:22
2F→:看到WinMain@16又是寫console程式練習, 第一個反應就是11/16 23:28
3F→:是不是project type開錯了說....Orz11/16 23:29
15F推:小弟我也投沒專案+1 XD11/17 00:20
16F→:話說各加compiler的error都不一樣, 剛剛還在猜undefine?11/17 00:20
17F→:unresolve? 不曉得CB的訊息是怎樣, VC還可以看報error的11/17 00:21
18F→:是Compiler還是Linker....11/17 00:22
19F→:其實也不是一定要專案, 只是makefile或build的參數要自11/17 00:23
20F→:己橋, 流程剛好前兩篇l大推文裡有講到:)11/17 00:24
19F→:dev-c++建proj後把source都拖進去, 不會自動弄好嗎?_?11/16 23:27
17F推:對不起小弟我常常推文廢話很多行....Orz11/16 23:25
17F推:目前看過的code裡, GL driver用不少....XD11/16 23:23
3F推:推一下:)11/16 00:25
4F推:觀念有點問題, left就是個函數, 不會有left=p的內容發生11/14 12:34
5F→:不要管指標, 尤其是什麼"字串內容"這件事, 先記得一件事11/14 12:35
6F→:left是個func, 回傳一個變數, 如同回傳int, double等的11/14 12:36
7F→:func一樣, 只是它回傳的是一個指標變數.11/14 12:36
8F→:如果left裡p new出來的空間在 0x10000000 (佔n byte先不11/14 12:37
9F→:管), 那麼left就只是把p記錄的值(0x10000000)回傳到main11/14 12:38
10F→:讓你的ps變數接著(以本例來說), 所以ps值在執行完該行以11/14 12:38
11F→:後就成為了0x10000000. 近似於做了ps=p; (當然code是不11/14 12:39
12F→:能這麼寫!!)11/14 12:39
13F→:至於0x10000000存什麼資料, 因為你left()裡是定成char[]11/14 12:41
14F→:型態並存入了字串資料, 所以內容是字串. 把語言的不同元11/14 12:41
15F→:素分開來理解再組合起來, 看看會不會比較容易懂@_@"11/14 12:42