How to C (as of 2016)
How to C in 2016 This is a draft I wrote in early 2015 and never got around to publishing. Here’s the mostly unpolished version because it wasn’t doing anybody any good sitting in my drafts folder. The simplest change was updating year 2015 to 2016 at publication time. (Update: Many people have submitted revisions, notes, and improvements. All contributions have been incorporated throughout the pa
Cã®ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã¨ä¾‹å¤–è¨è¨ˆã€ä¾‹å¤–処ç†ã®ãƒ¡ãƒ¢ - 百日åŠç‹‚ä¹±
二å五日åŠç‹‚ä¹±ã€6日目(ã®åˆ†...orz)ã®è¨˜äº‹ Cã®ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã‚’毎回やるã®ã¯é¢å€’ã ï¼ å‰å›žã‚‚言ã£ãŸãŒã€Cã§ã¯ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°ã«æˆ»ã‚Šå€¤ã¨errnoを用ã„る． ãã‚Œã¯ãã†ã¨ä¾‹å¤–è¨è¨ˆã«ãŠã„ã¦"無視"ã¯å¤§ç½ªã§ã‚る． ã ã‹ã‚‰ã€é–¢æ•°ã‚’呼ã³å‡ºã—ãŸã‚‰æˆ»ã‚Šå€¤ã¯æ¼ã‚‰ã•ãšãƒã‚§ãƒƒã‚¯ã™ã¹ãã ． ã¨ã„ã†ã“ã¨ã§ã€ä¾‹ãˆã°ä»¥ä¸‹ã®ã‚ˆã†ã«é€ä¸€æˆ»ã‚Šå€¤ã‚’ãƒã‚§ãƒƒã‚¯ã™ã‚‹ï¼Ž if(send(sockfd, buf, len, 0) < 0){ ERROR("send"); exit(1); } ã‚ãã€é¢å€’ã ． 一体コードã®ã©ã®éƒ¨åˆ†ãŒæ£å¸¸ç³»ã®å‡¦ç†ãªã®ã‹ï¼Ÿ ã»ã¨ã‚“ã©ã‚¨ãƒ©ãƒ¼ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°*1ã§åŸ‹ã‚å°½ãã•ã‚Œã‚‹ã˜ã‚ƒãªã„ã‹ï¼Ž ãã‚‚ãもエラーãƒãƒ³ãƒ‰ãƒªãƒ³ã‚°éƒ¨åˆ†ã«æ›¸ãã®ã¯æ¯Žå›žåŒã˜ã‚³ãƒ¼ãƒ‰ã ã—ã€ã‚³ãƒ¼ãƒ‰ã®ç¹°ã‚Šè¿”ã—ã¯é˜²ãŽãŸã„． エラー処ç†éƒ¨åˆ†ã‚’ラッピングã—ã¦æ¥½ã‚’ã™ã‚‹ unpv12eã®ä¸ã§ãƒ©ãƒƒãƒ‘ーを被ã›ã‚‹ã“ã¨ã«ã‚ˆã£ã¦ã“ã®é¢å€’を回é¿ã™ã‚‹æ–¹æ³•ã‚’知ã£ãŸï¼Ž in
ãƒã‚¤ãƒ³ã‚¿ã®é…列？ãã‚Œã¨ã‚‚é…列ã¸ã®ãƒã‚¤ãƒ³ã‚¿ï¼Ÿï¼ˆè¤‡é›‘ãªå¤‰æ•°å®£è¨€ï¼‰
ãƒã‚¤ãƒ³ã‚¿ã®é…列？ãã‚Œã¨ã‚‚é…列ã¸ã®ãƒã‚¤ãƒ³ã‚¿ï¼Ÿ （複雑ãªå¤‰æ•°å®£è¨€ï¼‰ よãã‚る勘é•ã„ã§ä»¥ä¸‹ã®ã‚ˆã†ã«é…列ã¨ãƒã‚¤ãƒ³ã‚¿ãŒçµ„ã¿åˆã‚ã•ã£ãŸå ´åˆã€å¤‰æ•°fooã¨barã¯ä½•ã‚’表ã™ã®ã‹æ··ä¹±ã™ã‚‹å ´åˆãŒã‚ã‚Šã¾ã™ã€‚ char *foo[100]; char (*bar)[100]; ã“ã®å‹˜é•ã„ã¯æ¼”ç®—åã®å„ªå…ˆé †ä½ã‚’ç†è§£ã—ã¦ã„ãªã„å ´åˆã«ç™ºç”Ÿã—ã¾ã™ã€‚æ›´ã«ã‚„ã£ã‹ã„ãªã“ã¨ã«æ¼”ç®—å*ãŒå·¦ã‹ã‚‰å³ã¸çµåˆã™ã‚‹ã®ã«å¯¾ã—ã€æ¼”ç®—å[]ãŒå³ã‹ã‚‰å·¦ã¸çµåˆã™ã‚‹ã®ã§ç‰¹ã«åˆå¿ƒè€…ã«ã¯ã‚ˆã‘ã„判りã¥ã‚‰ããªã‚Šã¾ã™ã€‚ C/C++言語ã«ãŠã„ã¦ã€æ¼”ç®—å[]ã¯æ¼”ç®—å*より高ã„ã®ã§ã€ã‚³ãƒ³ãƒ‘イラã¯[]ã‚’å…ˆã«è§£é‡ˆã—ã¾ã™ã€‚ ã¤ã¾ã‚Šã€"char *foo[100]"ã®å ´åˆã€ã“ã®å®£è¨€ã®è§£é‡ˆé †ã¯ä»¥ä¸‹ã®é€šã‚Šã§ã™ã€‚ 宣言ã®ã†ã¡ã€æœ€ã‚‚å„ªå…ˆé †ä½ãŒé«˜ã„ã®ã¯[]ã§ã‚る。ã¤ã¾ã‚Šã€å¤‰æ•°fooã¯ã€Œä½•ã‹ã€ãŒ100個ã‚ã‚‹é…列ã§ã‚る。 宣言ã‹ã‚‰[100]を除外ã™ã‚‹ã€‚ 宣言ã®æ®‹ã‚Šã¯"char* foo"
1
リリースã€éšœå®³æƒ…å ±ãªã©ã®ã‚µãƒ¼ãƒ“スã®ãŠçŸ¥ã‚‰ã›
最新ã®äººæ°—エントリーã®é…ä¿¡
処ç†ã‚’実行ä¸ã§ã™
j次ã®ãƒ–ックマーク
kå‰ã®ãƒ–ックマーク
lã‚ã¨ã§èªã‚€
eコメント一覧を開ã
oページを開ã
{{#tags}}- {{label}}
{{/tags}}