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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8F→:用整數與浮點數還要考慮的是是否要精確儲存每一位數與07/07 23:11
9F→:是否可容許誤差使能儲存更大值域的數值....07/07 23:12
10F→:話說, 確實這問題太大哉問了, 好好把書從頭到尾慢慢看,07/07 23:13
11F→:確實的練習, 才能先了解到每種type的特性與適用範圍, 累07/07 23:13
12F→:積更多經驗後自然知道選擇某些type是為什麼(或不為什麼)07/07 23:14
16F→:j大說的也是, 不同CPU的特性也很重要, 想起以前算個彩色07/08 00:52
17F→:轉灰階, 在桌機轉眼間的事, 在嵌入式系統開發板跑上幾個07/08 00:52
18F→:小時跑到我們以為當掉了, 就只是因為浮點數type....Orz07/08 00:52
19F→:只是這些東西不曉得對新手來說是不是還太早了一點@_@"07/08 00:54
7F推: Q1: Y = X & 207/07 18:09
9F推:我剛剛才看到, & 不在可用的operator之內....orz07/07 18:18
1F推:轉2進制再轉16進制?? 進制轉換只是顯示出來的文字與我們07/06 18:49
2F→:自己換算時方便的base, 對電腦來說是一樣的; 會不同的是07/06 18:50
3F→:數值或文字, Ex: int c=3; 與 int c='3'; c為不同的值;07/06 18:51
4F→:int c=15; int c=0xF; 這兩個結果的c值其實一模一樣....07/06 18:51
5F→:建議您把code直接貼出來, 感覺是輸出位數的問題....@_@"07/06 18:52
6F→:順便一問, 正確的是指和什麼比?? UltraEdit等軟體比嗎?07/06 18:55
9F推:有點亂, 您要不要用置底的貼code網站貼看看; 另外剛想到07/06 19:02
10F→:讀data有用unsigned type來讀/印嗎?? 印出一堆FF應該是07/06 19:03
11F→:讀到數值在signed為負值的case, 用unsigned type應該可07/06 19:03
12F→:以解決印出多餘的FF的數值; 但是亂碼的部份要再比比看@@07/06 19:04
16F推:&0xFF可以是因為把負值的high bit & 掉了吧?? 看起來07/06 19:13
18F→:ch[i]是char型態, 其實應該換成unsigned char也可以@_@"07/06 19:14
19F→:ASCII會有亂碼是看OS語系的關係吧?? 我用UE開個binary也07/06 19:14
20F→:難免會有亂碼啊@_@"07/06 19:15
21F推:另外, index = index++; 這一行應該會有問題....XD07/06 19:23
22F→:把上面這個index修掉, 與ch[]用unsigned char宣告, 應該07/06 19:24
23F→:就OK了, 至少這邊用Dev-C++測過, 看起來都沒問題了:)07/06 19:25
5F推:應該不是link error, 這會是build time就抓到的, 這樣會07/07 00:26
6F→:讓executable binary根本不會產生出來; 所以能build出07/07 00:26
7F→:exe, 執行時卻當掉, 比較可能是需要的run-time library07/07 00:27
8F→:找不到, 或者是本來環境有提供的東西卻沒了, 因為和這個07/07 00:29
9F→:lib不熟, 所以只能大概這樣推測....@_@"07/07 00:29
13F推:疑!? DevC++可以跑喔?? 您可以試著用VC的Debugger trace07/07 01:17
14F→:看看是跑到什麼地方有問題嗎?? 如果程式起來就錯誤然後07/07 01:17
15F→:結束, 也可以把error code或exit code拿來查看看@_@"07/07 01:17
20F推:你貼的這個不是error, 它只是linker在報一些資訊給你知07/07 01:38
21F→:道; 最後.exe應該還是有build出來, 你是直接按綠[|>]執07/07 01:39
22F→:行嗎?_?07/07 01:39
23F推:剛剛用VC2005 build了跑了一下, 沒什麼特別的問題,07/07 01:45
24F→:除了檔名的string要換一下: PlaySound("C:\\r.wav" =>07/07 01:46
25F→:PlaySound(L"C:\\r.wav"或PlaySound(TEXT("C:\\r.wav")07/07 01:47
26F→:本來想用_T的, 可是不知道為什麼build時說不認得_T @@"07/07 01:48
1F→:什麼圖形?? 彩色/黑白/灰階?? 什麼變化?? 亮度對比/色調07/06 12:54
2F→:/模糊銳利雜訊/DCT/DWT?? 壓縮/浮水印/data hiding?? 還07/06 12:55
3F→:是圖像物件morphing?? 小弟覺得你應該先講清楚想幹麻~_~07/06 12:56
6F→:結果猜了這麼多竟然沒有一個猜對; 也真沒特別學到過Orz07/06 13:52
10F→:疑?? 是喔@_@" 小弟一開始只是搞不清楚原po想做什麼而已07/06 17:56
11F→:如果有冒犯的地方還請原po見諒....Orz07/06 17:56
13F推:本來我也想說morphing算不算, 可是查了DIP的書與Wiki,07/07 01:13
14F→:morphing好像不是指原po要的那類PS濾鏡效果....@_@"07/07 01:14
1F推:推:) 小弟我也總是用C的思維在寫程式....Orz07/06 12:02
1F推:pass 10%還是fail 10%??07/05 21:21
1F推:follow一下, 小弟也很想知道....orz07/05 16:28
8F推:Visual Assist X, 因icon為一個小番茄, 故得名....XD07/08 18:05
7F→:XD = =|||07/06 12:57
12F推:t大good job....XD07/05 09:38