作者查詢 / james732
作者 james732 在 PTT [ C_and_CPP ] 看板的留言(推文), 共6724則
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收起看板(732)
9F→:到書局走走翻翻，看得懂在講啥的就可以買01/10 17:07
12F推:同意全部都講第六單元的話就很划算XD01/10 01:07
1F→:1. char a1[10]; 只寫這樣的話，裡面是垃圾值01/09 07:16
2F→: C string用'\0'判斷字串結束，找不到'\0'就會有問題01/09 07:17
3F→: 寫 "" 實際上有放了一個 '\0' 進去01/09 07:18
4F→:2. 請看置底文十三戒第四，char *的字串不能修改01/09 07:18
8F→:如果永遠都有類似c++ string class能用就沒差01/09 21:14
12F→:是很麻煩，但很難完全不使用啊...XD01/10 00:17
13F→:在純C的環境如果不了解C string的話更是容易踩到雷01/10 00:32
16F→:fstream檔案系列的類別，open都要吃const char *01/10 00:51
17F→:其實我不懂為什麼不設計成 open(string &filename, ...)01/10 00:51
19F→:我之前也這麼想，不過開檔的時候就要用 c_str() 再轉換01/10 00:55
1F→:請查書或google01/07 18:51
2F→:關鍵是條建編譯與巨集01/07 18:52
3F→:條件編譯才對，前置編譯也可以01/07 18:54
4F→:巨集也可以搜尋 C marco01/07 18:55
1F→:語法較簡單（不必星號與箭號）01/07 15:46
2F→:ref不能是null，所以不用檢查01/07 15:47
3F→:一時能想到的是這樣，雖然我覺得第一點未必好事01/07 15:49
1F→:好像有遇過←這句話也太不確定了吧XD01/06 00:59
3F→:剛剛試了gcc，在while外是不能用t的，你也可以試試手邊的01/06 01:00
7F→:我倒想問為什麼要選擇VC6，除了不得已的相容性問題外01/06 01:11
6F→:那個動作叫做轉型，因為C語言會檢查變數型態才要這樣寫01/06 00:16
7F→:組語大概是 mov edx,8F8F8F8F mov eax, [edx] 這種感覺01/06 00:17
8F→:mov edx,8F8F8F8F mov eax, dword ptr [edx] 這樣01/06 00:18
11F→:給完整一點的程式碼01/06 00:23
1F→:opencv？01/05 00:25
5F→:opencv可以搭配Visual C++，但我不確定你是不是需要這個01/05 00:32
2F→:0與1的長度是固定的嗎？01/04 23:37
14F→:http://ideone.com/p6yNr 大概是這樣子01/05 00:06
18F→:為什麼會跟union有關係...?01/05 00:18
23F→:char addrTemp[9]; 改成 char addrTemp[10] = {0};01/05 00:28
26F→:樓上是對的，不需要改長度 XD [9] 就夠了01/05 00:30
29F→:格式固定的話，想到用 sscanf 去抓，但也沒比較簡單01/05 00:31
13F→:Bitset可以這麼用 http://ideone.com/LvPge01/04 21:39