下面的例子展示了如何创建AND语句(用于为命令设置变量或包含参数)。

启动记事本并关闭CMD窗口:

start notepad.exe & exit

如果变量'a' = blah，则设置变量x、y和z的值。

IF "%a%"=="blah" (set x=1) & (set y=2) & (set z=3)

希望有帮助!

OR有点棘手，但也不过分。这里有一个例子

set var1=%~1
set var2=%~2
::
set or_=
if "%var1%"=="Stack" set or_=true
if "%var2%"=="Overflow" set or_=true
if defined or_ echo Stack OR Overflow

Athul Prakash (age 16 at the time) gave a logical idea for how to implement an OR test by negating the conditions in IF statements and then using the ELSE clause as the location to put the code that requires execution. I thought to myself that there are however two else clauses usually needed since he is suggesting using two IF statements, and so the executed code needs to be written twice. However, if a GOTO is used to skip past the required code, instead of writing ELSE clauses the code for execution only needs to be written once.

下面是一个可测试的例子，我将如何实现Athul Prakash的否定逻辑来创建一个OR。

在我的例子中，如果某人有坦克执照或者正在服兵役，他就可以开坦克。在两个提示中输入true或false，你将能够看到逻辑是否允许你驾驶坦克。

@ECHO OFF
@SET /p tanklicence=tanklicence:
@SET /p militaryservice=militaryservice:

IF /I NOT %tanklicence%==true IF /I NOT %militaryservice%==true GOTO done

ECHO I am driving a tank with tanklicence set to %tanklicence% and militaryservice set to %militaryservice%

:done

PAUSE

下面的例子展示了如何创建AND语句(用于为命令设置变量或包含参数)。

启动记事本并关闭CMD窗口:

start notepad.exe & exit

如果变量'a' = blah，则设置变量x、y和z的值。

IF "%a%"=="blah" (set x=1) & (set y=2) & (set z=3)

希望有帮助!

你可以用嵌套条件做和:

if %age% geq 2 (
    if %age% leq 12 (
        set class=child
    )
)

or:

if %age% geq 2 if %age% leq 12 set class=child

你可以用一个单独的变量:

set res=F
if %hour% leq 6 set res=T
if %hour% geq 22 set res=T
if "%res%"=="T" (
    set state=asleep
)

注意，这个答案是针对cmd批处理语言定制的，在Windows中可以找到。你提到了“DOS批处理”，但是，基于几点，我认为前者的选择是一个安全的赌注(1)。

如果你真的是指原始的MS-DOS批处理语言，你应该记住If语句要简单得多，你可能需要使用If语句的块…Goto表示控制流，而不是(例如)括号或其他。

(1)以下几点支持:

The presence of the cmd and windows-console tags; Prior experience of some people failing to recognise the very real difference between cmd and MS-DOS batch languages, and conflating DOC with the cmd terminal window; The question using the more generic "DOS" rather than specifically "MS-DOS" (where "DOS" could possibly be any disk operating system; The fact this is Stack Overflow rather than the retro-computing sister site, where a question about MS-DOS would be way more appropriate (I'm often on that site as well, it's nice for those of us who remember and appreciate computer history); and The (eventual) acceptance of the answer by the original asker, indicating that the solution worked.

德摩根定律允许我们只使用连词(“与”)和否定(“非”)将析取(“或”)转换为逻辑等价。这意味着我们可以将析取(“OR”)链到一行上。

这意味着如果名字是“Yakko”或“Wakko”或“Dot”，那么就呼应“Warner兄弟或姐妹”。

set warner=true
if not "%name%"=="Yakko" if not "%name%"=="Wakko" if not "%name%"=="Dot" set warner=false
if "%warner%"=="true" echo Warner brother or sister

这是paxdiablo的“OR”示例的另一个版本，但条件被链接到一行上。(注意leq的反义词是gtr, geq的反义词是lss。)

set res=true
if %hour% gtr 6 if %hour% lss 22 set res=false
if "%res%"=="true" set state=asleep