作者查詢 / jtmh
作者 jtmh 在 PTT [ Programming ] 看板的留言(推文), 共59則
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1F推:所謂區域變數清空是概念上的,程式實際執行時218.175.149.46 04/20 00:00
2F→:只是把 stack pointer 改掉而已,所以還是有218.175.149.46 04/20 00:02
3F→:可能可以存取到那個值,不過就跟你們老師說的218.175.149.46 04/20 00:03
4F→:一樣,那是依各編譯器實作而自訂的,你不能依218.175.149.46 04/20 00:03
5F→:賴這種 behavior, 否則程式何時要爆掉都不知218.175.149.46 04/20 00:04
6F→:道,像我加上最佳化之後,印出來的值就變成:218.175.149.46 04/20 00:05
7F→:134518108 134518098 (gcc v4.2.3)218.175.149.46 04/20 00:06
8F推:另外建議參考 C_and_CPP 版置底文 "C 語言新218.175.149.46 04/20 00:10
9F→:言新手十誡(增修一版)" 中的第六誡。218.175.149.46 04/20 00:11
5F推:既然會有疑問,為何還要這麼寫呢?218.175.157.233 03/31 21:53
1F推:左側邊欄 Docs >> 點進去就有了,看一下 man218.175.146.44 02/22 09:37
2F→:page 或 manual.218.175.146.44 02/22 09:39
6F推:據我所知是源自於 OSI模型,它的組成便是一層218.175.155.127 07/19 12:06
7F→:一層疊上去的,所以才會叫 stack, 並不是亂取218.175.155.127 07/19 12:07
8F→:的,維基上有說明 http://tinyurl.com/4p9p27218.175.155.127 07/19 12:08
9F→:不過我們目前使用的是簡化過的 OSI模型,可以218.175.155.127 07/19 12:10
10F→:參考維基上 TCP 等協定的說明:218.175.155.127 07/19 12:12
11F→:http://tinyurl.com/6e4t9k218.175.155.127 07/19 12:12
1F推:搜尋一下 Irvine32.inc 會有個 random... 的218.175.162.187 06/01 22:12
2F→:procedure 可用218.175.162.187 06/01 22:12
1F推:推,另補上 C FAQ 上相關的說明:218.175.148.121 06/01 16:28
2F→:http://c-faq.com/misc/swapnotemp.html218.175.148.121 06/01 16:28
2F→:這個有可能造成 undefined behavior218.175.148.121 06/01 15:11
1F→:這個是 C++ 吧218.175.148.121 06/01 15:00
3F→:標準的把 C++ 當 C 用?218.175.154.189 05/11 08:41
5F推:因為底層的 MS C runtime 不支援 long double218.175.163.137 04/14 22:11
6F→:詳情請參考:http://tinyurl.com/5usus7218.175.163.137 04/14 22:13