批量更改if语句中的变量

Question

问题是if语句没有改变变量，我不知道为什么。我一直在搞乱它，我找不到办法让它发挥作用。

:Sim
cls

set /a b=(3 * %random%) / 32768 + 1

set /a a=(3 * %random%) / 32768 + 1 

::Sets a random number between 1 and 3

if %a% == 1 set %a%=1

if %a% == 2 set %a%=2

if %a% == 3 set %a%=1

if %b% == 1 set %b%=2

if %b% == 2 set %b%=1

if %b% == 3 set %b%=2

::Is supposed to change the variable, but does not :(


echo %a%

echo %a%
:: only echos the random numbers

pause > nul
goto Sim

Answer 1

想出来只需删除％s