Celsius to Farenheit converter

[jjbtcp]

I want to make a batch file that can convert Celsius to Farenheit.

Below is the mathematical notation needed to make the conversion.
Celsius * 1.8 + 32

I made a program that does this in C++ but can't figure out how to make one in batch.


Thanks.

[Zylstra]

I dont think this is at all possible in Batch, as Batch is simply for automating lists of tasks. Your better off using a C program, or Qbasic.

( Cool tool: http://www.wbuf.noaa.gov/tempfc.htm )

[ghostdog74]

you can do simple arithmetic in batch
see here for example

[Sidewinder]

Actually, batch code can do simple integer arithmetic. If you use a conversion formula as F = C*9/5+32, you can produce a reasonable approximation.

Code: [Select]

C=78

set /a f=78*9/5+32

F = 172

The batch answer is off by .4 --- a decimal value the batch code can't process.

 

[patio]

How the heck are ya Sidewinder ? ?

 

[jjbtcp]

I guess I'll have to teach my friend C++. I want to help him learn but after you teach someone the basics it's hard to go too much further.

[Zylstra]

Through what I have read about Batch, I never learned once that it could be used for mathematical calculations.
I apologize for my incorrect advice, I had absolutely no idea

[jjbtcp]

Don't worry, even though your Information was Incorrect, it still holds relevance - when you said:

Your better off using a C program, or Q basic.

Thanks guys, But all in all I will just have to forget about making one in Batch.

Sidewinder, Thanks for the code, I know it's only a little bit off but I want it to be precise, Thanks anyway (still might come in useful).

[yperron]

you just have to mutliply your values by 100 then add the . at the right place

Code: [Select]

@echo off
set C=78
echo C  = %C%

set /a result=%c%*100*9/5+32*100
set /a f1=%result%/100
set /a f2=%result%-%f1%*100

set F=%f1%.%f2%
echo F  = %F%

the output is accurate:

Code: [Select]

C  = 78
F  = 172.40
yp