STDIN_FILENO鐨勪綔鐢ㄥ強涓巗tdin 鐨勫尯鍒?杞
STDIN_FILENO鐨勪綔鐢ㄥ強涓巗tdin 鐨勫尯鍒?杞?
STDIN_FILENO鐨勪綔鐢ㄥ強涓巗tdin 鐨勫尯鍒?
鍘熸枃鍦板潃http://blog.csdn.net/yeyuangen/article/details/6781999
1.STDIN_FILENO鐨勪綔鐢?
STDIN_FILENO灞炰簬绯荤粺API鎺ュ彛搴擄紝鍏跺０鏄庝负 int 鍨嬶紝鏄竴涓墦寮€鏂囦欢鍙ユ焺锛屽搴旂殑鍑芥暟涓昏鍖呮嫭 open/read/write/close 绛夌郴缁熺骇璋冪敤銆?
鎿嶄綔绯荤粺涓€绾ф彁渚涚殑鏂囦欢API閮芥槸浠ユ枃浠舵弿杩扮鏉ヨ〃绀烘枃浠躲€係TDIN_FILENO灏辨槸鏍囧噯杈撳叆璁惧鐨勬枃浠舵弿杩扮銆?
2.鍖哄埆
1锛夋暟鎹被鍨嬩笉涓€鑷达細
stdin绫诲瀷涓?FILE*
STDIN_FILENO绫诲瀷涓?int
浣跨敤stdin鐨勫嚱鏁颁富瑕佹湁锛歠read銆乫write銆乫close绛夛紝鍩烘湰涓婇兘浠寮€澶?
浣跨敤STDIN_FILENO鐨勫嚱鏁版湁锛歳ead銆亀rite銆乧lose绛?
2锛塻tdin绛夋槸FILE *绫诲瀷锛屽睘浜庢爣鍑咺/O锛岄珮绾х殑杈撳叆杈撳嚭鍑芥暟銆傚湪<stdio.h>銆?
STDIN_FILENO绛夋槸鏂囦欢鎻忚堪绗︼紝鏄潪璐熸暣鏁帮紝涓€鑸畾涔変负0, 1, 2锛屽睘浜庢病鏈塨uffer鐨処/O锛岀洿鎺ヨ皟鐢ㄧ郴缁熻皟鐢紝鍦?lt;unistd.h>銆?
3锛塖TDIN_FILENO 鏄爣鍑嗚緭鍏ョ殑鏂囦欢鎻忚堪绗?
璇﹁/usr/include/unistd.h
浠ｇ爜:
/* Standard file descriptors. */
#define STDIN_FILENO 0 /* Standard input. */
#define STDOUT_FILENO 1 /* Standard output. */
#define STDERR_FILENO 2 /* Standard error output. */
4锛夊眰娆′笉涓€鏍枫€係TDIN 灞炰簬鏍囧噯搴撳鐞嗙殑杈撳叆娴侊紝鍏跺０鏄庝负 FILE 鍨嬬殑锛屽搴旂殑鍑芥暟鍓嶉潰閮芥湁f寮€澶达紝濡俧open/fread/fwrite/fclose 鏍囧噯搴撹皟鐢ㄧ瓑
STDIN_FILENO灞炰簬绯荤粺API鎺ュ彛搴擄紝鍏跺０鏄庝负 int 鍨嬶紝鏄竴涓墦寮€鏂囦欢鍙ユ焺锛屽搴旂殑鍑芥暟涓昏鍖呮嫭 open/read/write/close 绛夌郴缁熺骇璋冪敤銆?
鏍囧噯搴撳唴灏佽浜嗙郴缁?API 璋冪敤锛屽 fread 鍐呴儴瀹炵幇璋冪敤 read銆?
5锛夋搷浣滅郴缁熶竴绾ф彁渚涚殑鏂囦欢API閮芥槸浠ユ枃浠舵弿杩扮鏉ヨ〃绀烘枃浠躲€係TDIN_FILENO灏辨槸鏍囧噯杈撳叆璁惧锛堜竴鑸槸閿洏锛夌殑鏂囦欢鎻忚堪绗︺€?
琛ュ厖锛?
1锛宭inux杩涚▼缁堟鏃讹紝鍐呮牳浼氬叧闂杩涚▼鐨勬墍鏈夋墦寮€鏂囦欢鎻忚堪绗?
2锛宺ead,write鐨刡uffer澶у皬瀵规€ц兘鏈夊奖鍝嶏紝閫氬父璁剧疆涓烘枃浠剁郴缁熺殑block_size澶у皬銆?
3锛宺ead鍑芥暟姣忔鎸囧畾鐨勫ぇ灏忎笉涓€瀹氳兘鑾峰彇鎸囧畾鏁伴噺鐨勬暟鎹?
4锛寃rite閫氳繃lseek鍐欑殑绌烘礊鏂囦欢锛岄€氬父涓嶅崰鐢ㄧ鐩樺潡锛屽啀鍏蜂綋鍐欏叆鐨勯€傚悎鍐嶅垎閰?闄ら潪棰勫厛鍏ㄩ儴璁剧疆)
STDIN_FILENO鐨勪綔鐢ㄥ強涓巗tdin 鐨勫尯鍒?
鍘熸枃鍦板潃http://blog.csdn.net/yeyuangen/article/details/6781999
1.STDIN_FILENO鐨勪綔鐢?
STDIN_FILENO灞炰簬绯荤粺API鎺ュ彛搴擄紝鍏跺０鏄庝负 int 鍨嬶紝鏄竴涓墦寮€鏂囦欢鍙ユ焺锛屽搴旂殑鍑芥暟涓昏鍖呮嫭 open/read/write/close 绛夌郴缁熺骇璋冪敤銆?
鎿嶄綔绯荤粺涓€绾ф彁渚涚殑鏂囦欢API閮芥槸浠ユ枃浠舵弿杩扮鏉ヨ〃绀烘枃浠躲€係TDIN_FILENO灏辨槸鏍囧噯杈撳叆璁惧鐨勬枃浠舵弿杩扮銆?
2.鍖哄埆
1锛夋暟鎹被鍨嬩笉涓€鑷达細
stdin绫诲瀷涓?FILE*
STDIN_FILENO绫诲瀷涓?int
浣跨敤stdin鐨勫嚱鏁颁富瑕佹湁锛歠read銆乫write銆乫close绛夛紝鍩烘湰涓婇兘浠寮€澶?
浣跨敤STDIN_FILENO鐨勫嚱鏁版湁锛歳ead銆亀rite銆乧lose绛?
2锛塻tdin绛夋槸FILE *绫诲瀷锛屽睘浜庢爣鍑咺/O锛岄珮绾х殑杈撳叆杈撳嚭鍑芥暟銆傚湪<stdio.h>銆?
STDIN_FILENO绛夋槸鏂囦欢鎻忚堪绗︼紝鏄潪璐熸暣鏁帮紝涓€鑸畾涔変负0, 1, 2锛屽睘浜庢病鏈塨uffer鐨処/O锛岀洿鎺ヨ皟鐢ㄧ郴缁熻皟鐢紝鍦?lt;unistd.h>銆?
3锛塖TDIN_FILENO 鏄爣鍑嗚緭鍏ョ殑鏂囦欢鎻忚堪绗?
璇﹁/usr/include/unistd.h
浠ｇ爜:
/* Standard file descriptors. */
#define STDIN_FILENO 0 /* Standard input. */
#define STDOUT_FILENO 1 /* Standard output. */
#define STDERR_FILENO 2 /* Standard error output. */
4锛夊眰娆′笉涓€鏍枫€係TDIN 灞炰簬鏍囧噯搴撳鐞嗙殑杈撳叆娴侊紝鍏跺０鏄庝负 FILE 鍨嬬殑锛屽搴旂殑鍑芥暟鍓嶉潰閮芥湁f寮€澶达紝濡俧open/fread/fwrite/fclose 鏍囧噯搴撹皟鐢ㄧ瓑
STDIN_FILENO灞炰簬绯荤粺API鎺ュ彛搴擄紝鍏跺０鏄庝负 int 鍨嬶紝鏄竴涓墦寮€鏂囦欢鍙ユ焺锛屽搴旂殑鍑芥暟涓昏鍖呮嫭 open/read/write/close 绛夌郴缁熺骇璋冪敤銆?
鏍囧噯搴撳唴灏佽浜嗙郴缁?API 璋冪敤锛屽 fread 鍐呴儴瀹炵幇璋冪敤 read銆?
5锛夋搷浣滅郴缁熶竴绾ф彁渚涚殑鏂囦欢API閮芥槸浠ユ枃浠舵弿杩扮鏉ヨ〃绀烘枃浠躲€係TDIN_FILENO灏辨槸鏍囧噯杈撳叆璁惧锛堜竴鑸槸閿洏锛夌殑鏂囦欢鎻忚堪绗︺€?
琛ュ厖锛?
1锛宭inux杩涚▼缁堟鏃讹紝鍐呮牳浼氬叧闂杩涚▼鐨勬墍鏈夋墦寮€鏂囦欢鎻忚堪绗?
2锛宺ead,write鐨刡uffer澶у皬瀵规€ц兘鏈夊奖鍝嶏紝閫氬父璁剧疆涓烘枃浠剁郴缁熺殑block_size澶у皬銆?
3锛宺ead鍑芥暟姣忔鎸囧畾鐨勫ぇ灏忎笉涓€瀹氳兘鑾峰彇鎸囧畾鏁伴噺鐨勬暟鎹?
4锛寃rite閫氳繃lseek鍐欑殑绌烘礊鏂囦欢锛岄€氬父涓嶅崰鐢ㄧ鐩樺潡锛屽啀鍏蜂綋鍐欏叆鐨勯€傚悎鍐嶅垎閰?闄ら潪棰勫厛鍏ㄩ儴璁剧疆)