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顺序文件 随机文件 二进制 其它 I/O
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OPEN WRITE# OPEN GET OPEN GET DATA RUN
CLOSE PRINT# CLOSE PUT CLOSE PUT READ CHAIN
RESET PRINT# USING RESET FIELD RESET LOCK RESTORE INKEY$
EOF INPUT# EOF LSET EOF UNLOCK ENVIRON LPRINT
LOC LINE INPUT$# LOC RSET LOC FREEFILE ENVIRON$ TAB
LOF FREEFILE LOF MK... LOF INPUT$ SYSTEM
LOCK SEEK CV... SEEK LINE INPUT$ SLEEP
UNLOCK SEEK# LOCK SEEK# VIEW PRINT END
FILEATTR FREEFILE UNLOCK FILEATTR DATE$ STOP
FILEATTR TIME$ LPOS
TRON STICK
RND # range: int((up-lo+1)*RND +lo) TROFF STRIG
IOCTL REM
IOCTL$
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字符串 DOS 显示 声明
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UCASE$ CHR$ SHELL LOCATE COLOR Main Procedures
LCASE$ ASC FILES PRINT SOUND --------- ----------
LEFT$ VAL NAME CLS CLEAR DECLARE
LTRIM$ SPC KILL BEEP PLAY COMMON
RIGHT$ SPACE$ MKDIR VIEW PRINT POS OPTION BASE
RTRIM$ STR$ CHDIR WIDTH CSRLIN CONST
MID$ INSTR RMDIR DEF FN
LEN STRING$ FILEATTR STATIC STATIC
LSET SWAP DIR$ SHARED SHARED
RSET FRE DIM DIM
ENVIRON REDIM REDIM
ENVIRON$ DEFINT DEFINT
----------------------------- ------------------------ DEFSTR DEFSTR
QUICKBASIC专用命令 内存/数组 DEFCUR DEFCUR
----------------------------- ------------------------ DEFINT DEFINT
LOCAL ALIAS $INCLUDE PEEK BLOAD VARPTR DEFLNG DEFLNG
SADD BYVAL Int86 POKE BSAVE VARPTR$ DEFSNG DEFSNG
SETMEM CDECL Int86x CLEAR UBOUND VARSEG DEFDBL DEFDBL
SIGNAL COMMAND$ INTERRUPT ERASE LBOUND FRE TYPE... TYPE...
EVENT UEVENT INTERRUPTX DEF SEG
VARPTR SSEG
VARSEG
---------------------------------------------------------------------------
循环和条件
---------------------------------------------------------------------------
FOR i TO j STEP k WHILE cond IF__THEN__ELSE SELECT CASE
EXIT FOR - CASE __ , __
NEXT WEND - IF__THEN CASE IS cond
ELSEIF__THEN__ CASE __ TO __
DO WHILE|UNTIL cond ELSE__ CASE ELSE
EXIT DO ENDIF END SELECT
LOOP WHILE|UNTIL cond
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图形 过程 文件类型