Batch-Jscript混合计算器 [英] Batch-Jscript Hybrid Calculator

问题描述

这是我的代码:

@if (@codesection==@batch) @then
@echo off
title 

C:
cd %windir%\System32
set c=echo 
:a
%c%abs: Absolute Value
%c%atn: Arctangent
%c%cos: Cosine in Degrees
%c%exp: e Raised to the Power of
%c%hex: Hexadecimal Value
%c%int: Integer Part
%c%log: Natural Logarithm
%c%oct: Octal Value
%c%rnd: Random Number from (0,1)
%c%sgn: Sign
%c%sin: Sine in Degrees
%c%sqr: Square Root
%c%tan: Tangent in Degrees
echo.
if defined a goto b
set /p a=
cls
for /f %%G in ('cscript //nologo //e:jscript "%~f0" "%a%"') do set b=%%G
goto a
:b
%c%%a%=%b%
echo.

goto:eof
@end
WScript.Echo("Math."+WScript.Arguments(0));

我不明白我在哪里使用了不正确的语法，如果有人可以帮助我调整此脚本，我将不胜感激.

I don't understand where I am using improper syntax and I'd greatly appreciate if somebody could help me tweak this script.

推荐答案

您的代码有一些问题. JScript中的所有数学函数都必须使用以下格式编写:Math.function(argument)，例如:Math.sqrt(25);您可以在此处 a>.

You have some problems with your code. All mathematic functions in JScript must be written with this format: Math.function(argument), for example: Math.sqrt(25); you may consult a description of this format here.

在JScript中，WScript.Echo是函数，因此它使用括号将参数括起来:

In JScript, WScript.Echo is a function, so it use parentheses to enclose the arguments:

WScript.Echo(eval(WScript.Arguments(0)));

请参见这篇文章.

在分隔@end之前需要一个goto :EOF，否则JScript代码将作为批处理代码执行！

You need a goto :EOF before the delimiting @end, otherwise the JScript code will be executed as a Batch one!

编辑:回复评论

您尚未指出所需的输出是什么，因此我对其进行了修改.这是我的版本:

You had not indicated what is the desired output, so I modified it. This is my version:

@if (@codesection==@batch) @then
@echo off

set "c=echo "
%c%abs:    Absolute Value
%c%atan:   Arctangent
%c%cos:    Cosine in Radians
%c%exp:    e Raised to the Power of
%c%floor:  Integer Part
%c%log:    Natural Logarithm
%c%random: Random Number from [0,1)
%c%sin:    Sine in Radians
%c%sqrt:   Square Root
%c%tan:    Tangent in Radians
echo.
:a
set "a="
set /p a=
if not defined a goto :EOF
for /f %%G in ('cscript //nologo //e:jscript "%~f0" "%a%"') do set b=%%G
%c%%a%=%b%
goto a

@end

WScript.Echo(eval("Math."+WScript.Arguments(0)));

输出示例:

C:\> test
abs:    Absolute Value
atan:   Arctangent
cos:    Cosine in Radians
exp:    e Raised to the Power of
floor:  Integer Part
log:    Natural Logarithm
random: Random Number from [0,1)
sin:    Sine in Radians
sqrt:   Square Root
tan:    Tangent in Radians

abs(3-5)
abs(3-5)=2
cos(Math.PI/3)
cos(Math.PI/3)=0.5
exp(1)
exp(1)=2.71828182845905
log(10)
log(10)=2.30258509299405
random()
random()=0.137126887153577
random()
random()=0.174421542333208
sin(Math.PI/2)
sin(Math.PI/2)=1
sin(Math.PI/3)
sin(Math.PI/3)=0.866025403784439
sin(Math.PI/4)
sin(Math.PI/4)=0.707106781186547
sqrt(2)
sqrt(2)=1.4142135623731
tan(Math.PI/4)
tan(Math.PI/4)=1

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