?? C++?\rbooltrueIse !"#$ %&@'()*+\r(C),-./@012345((strDest=O)||(strSrc==O)),6789:;<=45>?@@\rABC45"D>?(FGH@0 ) IJKLM@N?20 OPQRLMHN.\rT?UV0AW./@,-XY?UZ[\]^;T_U`@LMabcd\r[Vefgh45NULLij0 , Fk?Ulm?[\]^nI,-?o\r[2]\r(A)retum new string("Invalid argument(s)");6789:p;<=qrs@5tuvwW\raxyz{|0}~Hqra
@axP@w\rax@;<@5:\r05:;Iax`paxy\rz\r(B)retum 0 ; , 6789:|0>5:0NT,-qrs5:N\rT ,-qrs(¡¢D@£+)*+)¥¦§qrs¨©qrª«s?>s@¬\r®T¯°k±±P²³®T´µ1¶·?>oijqrs¸NJ¹5\r:@©º4?[;I»¼½?¾LM@N?2\r[3]\r(A)¿xÀÁ@strDests6789:cdÂ?;ÃÄ\r[4]\r(A)ÅÆm while (*strDest++=*strSrc++);Ç\r(B)Å Æ m while (*strSrc!=0,) *strDest++=*strSrc++;, 6789:WÈÉ'(@,-;\rÊÅÆ°Ë¢strDest"ÌÍ@ÎÏ|0ª«ÐÑW