A.求出字符變量A$中第一個(gè)字符的ASCⅡ編碼 B.求出字符變量A$中第二個(gè)字符的ASCⅡ編碼 C.求出字符變量A$中最后一個(gè)字符的ASCⅡ編碼 D.將A$中的字符轉(zhuǎn)換為數(shù)值
A.CHR$ B.STR$ C.VAL D.ASC
A.COPYHNDM-TZ.LIBC:\HNDM-TZ.TXT B.TYPEHNDM-TZ.LIB C.RENHNDM-TZ.LIBHNDM-TZ.TXT D.DIRHNDM-TZ.LIB