50%

[Mattis95]

I want to create a variable, then remove/add 50% of itself to itself, I thought it should work with this, but it doesn't:

Code: Select all

set hi=60
set /a hi=%hi% * 0.5

Why doesn't it work and how can I make it work?

[Ed Dyreen]

'
DOS doesn't support floats have to be emulated.

Code: Select all

set "hi=60"
set /a hi /= 2

[Mattis95]

'

Code: Select all

set "hi=60"
set /a hi /= 2

It worked, but if I want to add 50% of %hi% to %hi%?

[foxidrive]

Is this any good?

Code: Select all

@echo off
set hi=60
set /a hi=hi*3/2
set hi
pause

[orange_batch]

Code: Select all

@echo off
set hi=60

set /a hi=hi*30/2
if "%hi:~-1%"=="0" (set hi=%hi:~,-1%) else set hi=%hi:~,-1%.%hi:~-1%

set hi
pause

Returns decimal number to tenths (unless number is an integer).

[Aacini]

@Mattis95: May I suggest you to post better/clearer topic titles for your questions?

Regards...

[Mattis95]

@Mattis95: May I suggest you to post better/clearer topic titles for your questions?

Regards...

Yea, maybe I should have called it... "Add 50% of itself to itself"?