¦r¦ê¬O¥Î¨Ó¦s©ñ¤å¦rªº¡C¤å¦r¥²¶·©ñ¸m©óÂù¤Þ¸¹ (") ¤§¶¡¡A¥B¤£¯à¤À³Î¦¨¤£¦P¦æ¡C¦pªGn¦b¦r¦ê¤¤¥]§tÂù¤Þ¸¹¡A½Ð¨Ï¥Î¨âÓ³sÄòªºÂù¤Þ¸¹¨Óªí¥Ü¡C
"³o¬O¦r¦ê¡C" "123" "¦r¦ê ""±z¦n"" ¥[¤WÂù¤Þ¸¹¡C"
±z¥i¥HÂǥѫü©w¦r¤¸¦ì¸m©Î½d³ò¡A±q¦r¦ê¤¤©â¥X³æ¤@¤¸¯À©Î¤l¦r¦ê¡C¤¹³\¦³tÈ¡Aªí¥Ü«ü©w±q¦r¦êªº§ÀºÝ¶}©l¡C
"hello" (2) 'Equal to "e" "hello" (-5) 'Equal to "h" "604-555-1234" (1 to 3) 'Equal to "604" "abcdef" (-3 to -1) 'Equal to "def"
±z¤]¥i¥H¨Ï¥Î Left¡BRight ¤Î Mid ¨ç¦¡¡A±q¦r¦ê¤¤©â¥X¤l¦r¦ê¡C