ï¼æ¬¡å å¹³é¢ä¸ã®ç¹ p ãä¸è§å½¢ abc å ã«ä½ç½®ãããã©ããã調ã¹ãé¢æ°ãä½ãã ä¸è§å½¢ abc ã®åé ç¹ã a-b-c-a ã¨é çªã«ä¸åãããæãç¹ p ãä¸è§å½¢ abc ã®å å´ã«ãããªãã°ç¹ p ã¯é²è¡æ¹åã«å¯¾ãã¦å¸¸ã«åãå´ã«åå¨ããã èãæ¹ãã®ãã®ã¯ï¼æ¬¡å å¹³é¢ä¸ã®ä»»æã®å¸å¤è§å½¢ã«é©ç¨ã§ããã æ§é ä½ï¼ typedef struct TRIANGLE_tag // TRIANGLE_t â¦â¦ ä¸è§å½¢ { POINT_t a; POINT_t b; POINT_t c; } TRIANGLE_t; é¢æ°ï¼ //********************************************************* // ç¹ p ãä¸è§å½¢ t(a,b,c) ã«å«ã¾ããã調ã¹ãã // ç¹ p ãä¸è§å½¢ t ã®å å´ã«ããå ´å 1 ãã // ã ãä¸è§å½¢ t ã®ç·ä¸ã«ããå ´å -
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