我制作一个.bat文件，为二十一点游戏编码创建一个帐户。在游戏中我遇到代码％random％的问题，我试图让它在数字21和4之间选择一个随机数。这是完整的代码。我遇到问题的行显示为***** [CODE] *****
@Echo off
Color 02
title Account Creation
mode con cols=44 lines=6
Echo Enter to continue
pause>nul
:newORexisting
cls
Echo New account? [1]
Echo Existing account [2]
set /p answer=
if %answer%==1 goto new
if %answer%==2 goto load
:WI
cls
Echo Sorry. Wrong input.
Echo Enter to retry.
pause>nul
goto newORexisting
:new
cls
Echo Type your desired account name...
Echo then hit enter.
Echo.
Echo ~*~ NO SPACES ~*~
set /p acctname=
goto Next
:next
cls
Echo Now type your
Echo desired password.
Echo.
Echo ~*~ NO SPACES ~*~
set /p password=
cls
Echo Confirm your password is...
Echo %password%
Echo is this correct? [y] [n]
set /p confirmation=
if %confirmation%==y goto createACCT
if %confirmation%==n goto Retry
:retry
Echo Sorry.
Echo Press enter to re-enter your password.
pause>nul
goto next
:createACCT
color 02
cls
Echo Creating account,
Echo %acctname%
Echo Please Wait!
ping localhost -n 6 >nul
cls
Echo Account,
Echo %acctname%
Echo created.
Echo Press enter to finish!
pause>nul
cls
> %acctname%.bat (
Echo @Echo off
Echo color 02
Echo title %acctname%
Echo Mode con cols=50 lines=30
Echo :pass
Echo cls
Echo Echo Enter your password.
Echo set ^/p password=
Echo if %%password%%==%password% goto start
Echo cls
Echo Echo Sorry incorrect password.
Echo Echo Enter to retry.
Echo Pause^>nul
Echo goto pass
Echo :start
Echo cls
Echo Echo welcome back,
Echo Echo %acctname%
Echo Echo Enter to begin playing.
Echo Pause^>nul
Echo set money=1000
Echo cls
Echo :tableselect
Echo Echo Welcome to Blackjack.
Echo Echo Money:$%%money%%
Echo Echo.
Echo Echo Please select a table.
Echo.
Echo Echo Table Number:1
Echo Echo Dealer:David
Echo Echo Betting Range:$10 - $50
Echo Echo.
Echo Echo Table Number:2
Echo Echo Dealer:Jessica
Echo Echo Betting Range:$50 - $100
Echo Echo.
Echo Echo Table Number:3
Echo Echo Dealer:Mark
Echo Echo Betting Range:$100 - $500
Echo Echo.
Echo Echo Table Number:4
Echo Echo Dealer:Robert
Echo Echo Betting Range:$500 - $1000
Echo Echo.
Echo set ^/p table=Table Number:
Echo if %%table%%==1 goto Table1
Echo if %%table%%==2 goto Table2
Echo if %%table%%==3 goto Table3
Echo if %%table%%==4 goto Table4
Echo :Table1
Echo if %%money%% LEQ 0 goto NoMoney
Echo cls
Echo Echo Table Number:1
Echo Echo Dealer:David
Echo Echo Money:$%%money%%
Echo Echo Players:
Echo Echo.
Echo Echo James:Bet:$0
Echo Echo.
Echo Echo Angie:Bet:$0
Echo Echo.
Echo Echo Jaryd:Bet:$0
Echo Echo.
Echo Echo %acctname%:Bet:$0
Echo Echo.
Echo set ^/p betamount=Bet Amount:$10 - $50:$
Echo if %%betamount%% LEQ 9 goto invalidbet
Echo if %%betamount%% GEQ 51 goto invalidbet
Echo goto Table1active
Echo :invalidbet
Echo cls
Echo Echo Sorry. Your bet was invalid.
Echo Echo Enter to retry
Echo Pause^>nul
Echo goto Table1
Echo :Table1active
Echo set ^/a money=%%money%%-%%betamount%%
Echo cls
Echo Echo Table Number:1
Echo Echo Dealer:David
Echo Echo Money:$%%money%%
Echo Echo Players:
Echo Echo.
Echo Echo James:Bet:$%%betamount%%
Echo Echo.
Echo Echo Angie:Bet:$%%betamount%%
Echo Echo.
Echo Echo Jaryd:Bet:$%%betamount%%
Echo Echo.
Echo Echo %acctname%:Bet:$%%betamount%%
Echo Echo.
Echo Echo Press enter to start dealing.
Echo pause^>nul
Echo cls
*****Echo set handP1=%%random%% %%21+4*****
*****Echo set handP2=%%random%% %%21+4*****
*****Echo set handP3=%%random%% %%21+4*****
*****Echo set handP4=%%random%% %%21+4*****
Echo Echo Table Number:1
Echo Echo Dealer:David
Echo Echo Money:$%%money%%
Echo Echo Players:
Echo Echo.
Echo Echo James:Hand:%%handP1%%
Echo Echo.
Echo Echo Angie:Hand:%%handP2%%
Echo Echo.
Echo Echo Jaryd:Hand:%%handP3%%
Echo Echo.
Echo Echo %acctname%:Hand:%%handP4%%
Echo Echo.
Echo Echo Press 1 to hit.
Echo Echo Press 2 to stay.
Echo set ^/p hitStay=Choice:
Echo if %%handP1%% LEQ 16 set ^/a handP1=%%handP1%%+%%random%% %11+1
Echo if %%handP2%% LEQ 16 set ^/a handP1=%%handP1%%+%%random%% %11+1
Echo if %%handP3%% LEQ 16 set ^/a handP1=%%handP1%%+%%random%% %11+1
Echo if %%hitStay%%==1 goto hitT1
Echo if %%hitStay%%==2 goto stayT1
Echo :hitT1
Echo set ^/a handP4=%%handP4%%+%%random%% %11 +1
Echo cls
Echo Table Number:1
Echo Echo Dealer:David
Echo Echo Money:$%%money%%
Echo Echo Players:
Echo Echo.
Echo Echo James:Hand:$%%handP1%%
Echo Echo.
Echo Echo Angie:Hand:$%%handP2%%
Echo Echo.
Echo Echo Jaryd:Hand:$%%handP3%%
Echo Echo.
Echo Echo %acctname%:Hand:$%%handP4%%
Echo Echo.
Echo :stayT1
Echo cls
Echo Table Number:1
Echo Echo Dealer:David
Echo Echo Money:$%%money%%
Echo Echo Players:
Echo Echo.
Echo Echo James:Hand:$%%handP1%%
Echo Echo.
Echo Echo Angie:Hand:$%%handP2%%
Echo Echo.
Echo Echo Jaryd:Hand:$%%handP3%%
Echo Echo.
Echo Echo %acctname%:Hand:$%%handP4%%
Echo Echo.
Echo Echo Please Wait.
Echo ping localhost -n 5 >nul
Echo if %%handP1%% GTR %%handP2%%
Echo pause^>nul
)
Echo Account Created.
Echo Please wait!
Ping localhost -n 4 >nul
start call %acctname%.bat
exit
:load
cls
Echo Type acct name
Echo then hit enter.
set /p acctname=
start call %acctname%.bat
exit
请帮我弄清楚为什么这不起作用。数字不在21和4之间。数字显示为34324 +4，或其他一些高数字+4
答案 0 :(得分：1)
替换
Echo set handP1=%%random%% %%21+4
与
Echo set /A handP1=%%random%% %%%% 21 + 4
<强>证明：
==>type D:\bat\SO\31377293.bat
@ECHO OFF >NUL
> files\31377293.bat (
Echo set /A handP1=%%random%% %%%% 21 + 4
Echo @set handP
)
@ECHO ON >NUL
type files\31377293.bat
call files\31377293.bat
<强>输出：
==>D:\bat\SO\31377293.bat
==>type files\31377293.bat
set /A handP1=%random% %% 21 + 4
@set handP
==>call files\31377293.bat
==>set /A handP1=8932 % 21 + 4
handP1=11
==>