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gologo13 2014/11/04
performance

c
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gologo13 2014/10/31
programming

error_handling

C

C++
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gologo13 2013/12/29
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programming

alignment

c

cpu
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gologo13 2012/07/08
programming

c
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gologo13 2012/06/05
programming

C

pointer
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gologo13 2011/04/28
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c

c++
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gologo13 2011/03/21
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c

gdb
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gologo13 2011/03/21
gtk

c
ãƒªãƒ³ã‚¯
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gologo13 2011/03/21
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C

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popenã¨pcloseã¯æŒ‡å®šã—ãŸsystemé–¢æ•°ã«ãƒ‘ã‚¤ãƒ—æ©Ÿèƒ½ã‚’åŠ ãˆãŸæ„Ÿã˜ã§ä½¿ç”¨ã§ãã‚‹.å®Ÿéš›shellçµŒç”±ã§å¼•æ•°ã®ã‚³ãƒžãƒ³ãƒ‰ã‚’æ¸¡ã™ã®ã§,ã‚ªãƒ¼ãƒãƒ¼ãƒ˜ãƒƒãƒ‰ã¯å¤§ãã„ãŒãƒ¯ã‚¤ãƒ«ãƒ‰ã‚«ãƒ¼ãƒ‰ãªã©ã‚’ä½¿ç”¨ã§ãã‚‹.ã§,ãƒ‘ã‚¤ãƒ—ã‚’ä½¿ç”¨ã™ã‚‹ã¨,ã‚ã‚‹ã‚³ãƒžãƒ³ãƒ‰ã®å‡ºåŠ›ã‚’åˆ¥ã®ã‚³ãƒžãƒ³ãƒ‰ã®å…¥åŠ›ã«ä½¿ç”¨ã§ãã‚‹.ä¾‹ãˆã° dmesg | head ã§ã¯,dmesgã®å‡ºåŠ›ãŒheadã®å…¥åŠ›ã¨ãªã‚Šãã—ã¦ãã®headã®å‡ºåŠ›ãŒç«¯æœ«ã«å‡ºåŠ›ã•ã‚Œã‚‹. èªã¿è¾¼ã‚€popenã¯ãƒ•ã‚¡ã‚¤ãƒ«ã‚¹ãƒˆãƒªãƒ¼ãƒ ã‚’é–‹ã.pcloseã¯é–‰ã˜ã‚‹.popenã§ã¯ãƒ•ã‚¡ã‚¤ãƒ«ã‚¹ãƒˆãƒªãƒ¼ãƒ ãŒèªã¿è¾¼ã¿ç”¨ã‹æ›¸ãè¾¼ã¿ç”¨ã‹ã©ã¡ã‚‰ã‹ã‚’é¸æŠžã™ã‚‹.èªã‚€ã‹æ›¸ãã‹ã¨èžã‹ã‚ŒãŸã‚‰,ãªã‚“ã¨ãªãã¾ãšã¯èªã‚“ã§ã¿ãŸã„æ°—ãŒã™ã‚‹ã®ã¯ç§ã ã‘ã ã‚ã†ã‹.èªã¿è¾¼ã¿ç”¨ã§é–‹ãå ´åˆ,popenã—ãŸãƒ—ãƒã‚»ã‚¹ã¯ã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³ã§ã¯|ã®å³å´ã¨ã„ã†ã“ã¨ã«ãªã‚‹.ä»¥ä¸‹,popenã§èªã¿è¾¼ã¿ç”¨ãƒ‘ã‚¤ãƒ—ã‚¹ãƒˆãƒªãƒ¼ãƒ ã‚’é–‹ã„ãŸå ´åˆã®ã‚µãƒ³ãƒ—ãƒ«. #include <s
gologo13 2010/10/25
c

popen
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BohYoh.comï¼C/C++ FAQ mallocã«å¯¾ã™ã‚‹callocã®ãƒ¡ãƒªãƒƒãƒˆã¯ä½•ã§ã™ã‹ã€‚
callocé–¢æ•°ã‚’ä½¿ãˆã°ã€æ§‹é€ ä½“ã‚„å…±ç”¨ä½“ã®å†…éƒ¨ã«ä½œã‚‰ã‚Œã‚‹â€œè©°ã‚ç‰©â€ã®ãƒ“ãƒƒãƒˆã‚‚ã™ã¹ã¦0ã«ãªã‚Šã¾ã™ã€‚ã“ã®â€œæ°—æŒã¡ã‚ˆã•â€ã‚’å¾—ã‚‹ãŸã‚ã«ã¯ã€mallocé–¢æ•°ã§ãªãã€callocé–¢æ•°ã‚’ä½¿ã‚ãªã‘ã‚Œã°ãªã‚Šã¾ã›ã‚“ï¼ˆç¬‘ï¼‰ã€‚ â€•ã€€ã™ã¹ã¦ã®ãƒ“ãƒƒãƒˆãŒ0ã«ãªã£ã¦ã‚‚ã€æµ®å‹•å°æ•°ç‚¹æ•°ã‚„ãƒã‚¤ãƒ³ã‚¿ã®å€¤ã¯0ã«ãªã‚‹ã¨ã¯é™ã‚‰ãªã„ã§ã™ã‚ˆãã€‚ãã‚Œã ã£ãŸã‚‰mallocé–¢æ•°ã§ç¢ºä¿ã—ãŸå¾Œã«0ã‚’ä»£å…¥ã™ã‚Œã°ã„ã„ã®ã§ã¯ãªã„ã§ã™ã‹ã€‚ ã¾ã‚ã€ãã†ã‚‚ã„ãˆã‚‹ã§ã—ã‚‡ã†ã€‚ã“ã“ã§ã€ç¬¬1ç« ã«ç¤ºã—ãŸå›³ã‚’å†ã³Fig.7-5ã«ç¤ºã—ã¾ã™ã€‚ ã“ã‚Œã¯ã€intåž‹ãŒè¨˜æ†¶åŸŸä¸Šã«32ãƒ“ãƒƒãƒˆã‚’å æœ‰ã—ã¦ã„ã¦ã‚‚ã€å®Ÿéš›ã«ã¯28ãƒ“ãƒƒãƒˆã—ã‹ä½¿ã‚ãªã„å‡¦ç†ç³»ã‚‚ã‚ã‚Šå¾—ã‚‹ã€ã¨ã„ã†ã“ã¨ã‚’ç¤ºã™ã‚‚ã®ã§ã—ãŸã€‚ã“ã®æ•´æ•°ã«0ã‚’ä»£å…¥ã™ã‚‹ã¨ã€ç¢ºã‹ã«æœ‰åŠ¹ãªãƒ“ãƒƒãƒˆã®å…¨ãƒ“ãƒƒãƒˆãŒ0ãŒã¨ãªã‚Šã¾ã™ã€‚ ã—ã‹ã—ã€æœªä½¿ç”¨ãƒ“ãƒƒãƒˆã«ã¾ã§0ãŒä»£å…¥ã•ã‚Œã‚‹ã¨ã„ã†ä¿è¨¼ãŒãªã„ã“ã¨ã«æ³¨æ„ã—ã¾ã—ã‚‡ã†ã€‚ æ•´æ•°åž‹ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®å…¨ãƒ“ãƒƒãƒˆãŒ0ã§ã‚ã‚Œã°ã€å€¤ã‚‚0ã§ã‚
gologo13 2010/09/29
malloc calloc

c

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strtok
æ–‡å—åˆ—ã‚’åŒºåˆ‡ã‚Šæ–‡å—ã§åˆ†è§£ã™ã‚‹ ã€æ›¸å¼ã€‘ #include <string.h> charÂ *strtok(char *s1, const char *s2); ã€èª¬æ˜Žã€‘ åˆ†è§£å¯¾è±¡æ–‡å—åˆ— s1 ã‚’ã€æ–‡å—ç¾¤ s2 ä¸ã®æ–‡å—ã‚’åŒºåˆ‡ã‚Šã«å—å¥ï¼ˆãƒˆãƒ¼ã‚¯ãƒ³ï¼‰ã«åˆ†è§£ã—ã¾ã™ã€‚ æ¬¡ã®ã‚ˆã†ãªæ‰‹é †ã§ strtok() ã‚’ç”¨ã„ã¦æ–‡å—åˆ—ã‚’ãƒˆãƒ¼ã‚¯ãƒ³ã«åˆ†è§£ã™ã‚‹ã“ã¨ãŒå‡ºæ¥ã¾ã™ã€‚ æœ€åˆã®å‘¼ã³å‡ºã—ã§ã¯ s1 ã«ã¯åˆ†è§£å¯¾è±¡ã®æ–‡å—åˆ—ã‚’æŒ‡å®šã—ã¾ã™ã€‚ãƒˆãƒ¼ã‚¯ãƒ³ãŒã‚ã‚Œã°ã€strtok() ã¯ãƒˆãƒ¼ã‚¯ãƒ³ã¸ã®ãƒã‚¤ãƒ³ã‚¿ã‚’è¿”å´ã—ã¾ã™ã€‚ 2å›žç›®ä»¥é™ã®å‘¼ã³å‡ºã—ã§ã¯ s1 ã« NULL ã‚’æŒ‡å®šã—ã¾ã™ã€‚åˆ†è§£ã§ãã‚‹ãƒˆãƒ¼ã‚¯ãƒ³ãŒã‚ã‚‹ã†ã¡ã¯ã€strtok() ã¯ãƒˆãƒ¼ã‚¯ãƒ³ã¸ã®ãƒã‚¤ãƒ³ã‚¿ã‚’è¿”å´ã—ã¾ã™ã€‚ ãƒˆãƒ¼ã‚¯ãƒ³ãŒãªããªã‚‹ã¨ strtok() ã¯ NULL ã‚’è¿”å´ã—ã¾ã™ã€‚ strtok() ã¯ãƒˆãƒ¼ã‚¯ãƒ³ã¸ã®ãƒã‚¤ãƒ³ã‚¿ã‚’è¿”å´ã—ãªãŒã‚‰ã€åˆ†è§£å¯¾è±¡æ–‡å—åˆ— s1 ä¸ã®åŒºåˆ‡ã‚Šæ–‡å—ã«ç©ºæ–‡å—
gologo13 2010/09/25
regexpã¯ä½¿ãˆãªã„ split ã®ä»£ã‚ã‚Šã«ã¯ãªã‚‹æ„Ÿã˜ï¼Ž

c

string
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COOL ONLINE - JAPAN - JAPAN ONLINE
Ukai, or cormorant fishing, is a captivating and ancient Japanese tradition that dates back over 1,300 years. This unique fishing technique, practiced along several rivers in Japan, combines history,...
gologo13 2010/09/20
cè¨€èªžã§æ—¥æœ¬èªžã®æ–‡å—ã®è¡¨ç¤ºãªã©

c

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ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚ã«ã€ãŸã¨ãˆã° $ gcc -o prog1 prog1.c prog1.c: In function `main': prog1.c:9: error: syntax error before ';' token prog1.c:9: error: syntax error before ')' token prog1.c: At top level: prog1.c:14: error: syntax error before "return" ã®ã‚ˆã†ã«ã‚¨ãƒ©ãƒ¼ãŒã§ã¾ã™ã€‚ ã“ã®ã‚¨ãƒ©ãƒ¼ã¯å¾—ä½“ã®çŸ¥ã‚Œãªã„è‹±èªžã§ã¯ãªãã€æ¯”è¼ƒçš„ã‚ã‹ã‚Šã‚„ã™ã„ã€æ„å‘³ã®ã‚ã‚‹è‹±èªžã§ã™ã€‚ ã€ŒIn function `main'ã€ï¼ã€Œmain()ã®ãªã‹ã®ã©ã£ã‹ã§ã€ ã€Œ9: syntax error before ';'ã€ï¼ã€Œï¼™è¡Œç›®ã®ï¼›ã®å‰ã«æ–‡æ³•ã‚¨ãƒ©ãƒ¼ã€ ãªã©ã§ã™ã€‚ é–“é•ã„ã‚’ã¤ã¶ã—ã¦ã„ãã“ã¤ã¯ã€ ã¨ã‚Šã‚ãˆãšã€ä¸€ç•ªæœ€åˆ
gologo13 2010/09/19
c

gcc
ãƒªãƒ³ã‚¯
http://d.hatena.ne.jp/hyu_mu/20100731/1280535832
gologo13 2010/07/31
string

c
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c-eldoc.el ã§ C è¨€èªžãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°é©å‘½ - mooz deceives you
emacs ã¯äººç”Ÿ å…ˆæ—¥, ã¾ãŸ Life Changing ãªã‚‚ã®ã«å‡ºä¼šã£ã¦ã—ã¾ã„ã¾ã—ãŸ. æœ€è¿‘, æ¯Žé€±ã®ã‚ˆã†ã«ã“ã®è¨€è‘‰ã‚’ä½¿ã£ã¦ã„ã¦åƒ•ã¯ã©ã‚Œã ã‘äººç”Ÿã‚’å¤‰ãˆã‚Œã°æ°—ãŒæ¸ˆã‚€ã®ã‹ã¨ã„ã†è©±ãªã®ã§ã™ãŒ, å‡ºä¼šã£ã¦ã—ã¾ã£ãŸã®ã§ã™. c-eldoc.el ã«. eldoc.el çš†ã•ã‚“, eldoc.el ã‚’ã”å˜çŸ¥ã§ã—ã‚‡ã†ã‹. Emacs Lisp ã‚’å°‘ã—ã§ã‚‚æ›¸ã‹ã‚Œã‚‹ã¨ã„ã†æ–¹ãªã‚‰çµ¶å¯¾ã«ä½¿ã£ã¦ãŠããŸã„ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã®ä¸€ã¤ãŒ, ã“ã® eldoc.el ã§ã™. ã‚«ãƒ¼ã‚½ãƒ«ä»˜è¿‘ã®é–¢æ•°ã«å¯¾ã™ã‚‹å¼•æ•°ã®ãƒªã‚¹ãƒˆã‚’ã‚¨ã‚³ãƒ¼ã‚¨ãƒªã‚¢ã¸è¡¨ç¤ºã—ã¦ãã‚ŒãŸã‚Š, ã‚«ãƒ¼ã‚½ãƒ«ã®ä½ç½®ã‹ã‚‰å¯¾å¿œã™ã‚‹å¼•æ•°ã‚’å‰²ã‚Šå‡ºã—ãƒã‚¤ãƒ©ã‚¤ãƒˆã—ã¦ãã‚ŒãŸã‚Š, ã‚‚ã†ã“ã‚Œãªã—ã§ elisp ã‚’æ›¸ãæ°—ãªã©ãŠãã¾ã›ã‚“. ã•ã‚‰ã«ã¯ eldoc-extension ã¨ã„ã†ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã‚’å…¥ã‚Œã‚‹ã“ã¨ã«ã‚ˆã‚Šé–¢æ•°ã‚„å¤‰æ•°ã®ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆã‚’è¡¨ç¤ºã—ã¦ãã‚Œã‚‹æ©Ÿèƒ½ã¾ã§è¿½åŠ ã•ã‚Œ, ã‚‚ã†è‡³ã‚Œã‚Šå°½ãã›ã‚Šã§ã™. è©³
gologo13 2010/05/04
emacs

C

elisp
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K&R malloc/freeä½œã£ã¦ã¿ãŸ - narihiro.info(å‹•ç”»)
K&Rã«ã®ã£ã¦ãŸmalloc/freeã‚’ä½œã£ã¦ã¿ã¾ã—ãŸã€‚ï¼ˆç´„60åˆ†ï¼‰ æ£æ°—ã®æ²™æ±°ã¨ã¯æ€ãˆãªã„ã»ã©é•·ã„ã§ã™ãã€‚åçœã€‚ ã¾ã‚ã£ãã¯ã‚€ãšã‹ã—ã„ #include <stdio.h> #include <stddef.h> #include <stdlib.h> /* K&R malloc Heap +--------------------------------------------------------------------- | alloc |header next ...........| allocated |header next.... | +--------------------------------------------------------------------- ^ +-----------------------------^ +-------------
gologo13 2010/05/03
gc

c
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ä½•æ•…é§„ç›®ãªã®ã‹?: å¾¡æ‰‹æ´—ç‰¹æ€¥é€”ä¸ä¸‹è»Š
Cè¨€èªžã§é…åˆ—ã«é…åˆ—ã‚’ä»£å…¥ã™ã‚‹ã®ã¯ä½•æ•…é§„ç›®ãªã®ã‹ Cè¨€èªžã§é…åˆ—ã«é…åˆ—ã‚’ä»£å…¥ã™ã‚‹ã¨ã€ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã‚¨ãƒ©ãƒ¼ãŒç™ºç”Ÿã—ã¾ã™ã€‚ä¾‹ãˆã°ä»¥ä¸‹ã®ã‚³ãƒ¼ãƒ‰ã‚’gccã§ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã—ã‚ˆã†ã¨ã™ã‚‹ã¨ã€"incompatible types in assignment"ã¨ã„ã†ã‚¨ãƒ©ãƒ¼ãŒç™ºç”Ÿã—ã¾ã™ã€‚ 1 /* header files */ 2 #include <stdlib.h> 3 #include <stdio.h> 4 5 /* main */ 6 int main (int argc, char *argv[]) { 7 char c1[] = "afa"; 8 char c2[4]; 9 10 c2 = c1; 11 12 return EXIT_SUCCESS; 13 } |10| error: incompatible types in assignment "incompatible types in assi
gologo13 2010/04/06
å·¦è¾ºãŒå…¨ä½“ï¼Œå³è¾ºãŒæœ€åˆã®ãƒã‚¤ãƒ³ã‚¿ã‹ï¼Ž

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gologo13 2010/04/05
gcc

binary

C
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Cã¨C++ã§ã®ä¾‹å¤–å‡¦ç†ã€ç¬¬1éƒ¨
ã“ã®ãƒ–ãƒ©ã‚¦ã‚¶ãƒ¼ã¯ã‚µãƒãƒ¼ãƒˆã•ã‚Œãªããªã‚Šã¾ã—ãŸã€‚ Microsoft Edge ã«ã‚¢ãƒƒãƒ—ã‚°ãƒ¬ãƒ¼ãƒ‰ã™ã‚‹ã¨ã€æœ€æ–°ã®æ©Ÿèƒ½ã€ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£æ›´æ–°ãƒ—ãƒã‚°ãƒ©ãƒ ã€ãŠã‚ˆã³ãƒ†ã‚¯ãƒ‹ã‚«ãƒ« ã‚µãƒãƒ¼ãƒˆã‚’åˆ©ç”¨ã§ãã¾ã™ã€‚ Robert Schmidt 1999 å¹´ 5 æœˆ 10 æ—¥ Robert Schmidt ã¯åˆã‚ã¦ã®ã‚³ãƒ©ãƒ ã§ã€C++ ã§ä¾‹å¤–ã‚’å‡¦ç†ã™ã‚‹æ–¹æ³•ã‚’è§£èª¬ã—ã¾ã™ã€‚ ã¯ã˜ã‚ã« ã”æ©Ÿå«Œã„ã‹ãŒã§ã—ã‚‡ã†ã‹ã€‚ä»Šåº¦æ–°ãŸã« MSDN Online Voice ã«åŠ ã‚ã£ãŸ Robertï¼ˆBobbyï¼‰Schmidt ã§ã™ã€‚C ã¨ C++ ã‚’ä½¿ã†ãƒ—ãƒã‚°ãƒ©ãƒžã‚’å¯¾è±¡ã¨ã—ãŸç§ã®é€£è¼‰ã‚³ãƒ©ãƒ Deep C++ ã¸ã‚ˆã†ã“ãã€‚ã“ã®ã‚³ãƒ©ãƒ ã®å‰ç½®ãã¨ã—ã¦ã€ã¾ãšã¯è‡ªå·±ç´¹ä»‹ã¨ã€ã“ã®ã‚³ãƒ©ãƒ ãŒ MSDN ã®ä¸ã§å ã‚ã‚‹ä½ç½®ã«ã¤ã„ã¦èª¬æ˜Žã•ã›ã¦ã„ãŸã ãã¾ã™ã€‚ åŽå…¥ã‚’å¾—ã‚‹ã“ã¨ãŒãƒ—ãƒã®è¨¼ãªã‚‰ã€ç§ã®ãƒ—ãƒã‚°ãƒ©ãƒžã¨ã—ã¦ã®ã‚ãƒ£ãƒªã‚¢ã¯ 18 å¹´å‰ã«æ•…éƒ·ã®ã‚ªãƒã‚¤ã‚ªå·žãƒ‡ã‚¤ãƒˆãƒ³ã§å§‹ã¾ã‚Šã¾
gologo13 2010/04/05
signal

C

C++
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