onlyforbopi
1/13/2017 - 12:25 PM

## DOS_TUTORIAL

DOS_TUTORIAL

``````::::::::::::::::::::::::::::::::::::::::::::::::::::
:: Create an array (1st method)
set a[0] = 1
set a[1] = 3

:: Create an array (2nd method)
::Another way to implement arrays is to define a list of values and iterate
::through the list of values.
::The following example show how this can be implemented.

@echo off
set list = 1 2 3 4
(for %%a in (%list%) do (
echo %%a
))

::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: ACCESSING ARRAY ELEMENTS

@echo off
set a[0] = 1
set a[1] = 2
set a[2] = 3
echo The first element of the array is %a[0]%
echo The second element of the array is %a[1]%
echo The third element of the array is %a[2]%

::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: MODIFYING ARRAY
@echo off
set a[0] = 1
set a[1] = 2
set a[2] = 3
Rem Adding an element at the end of an array
Set a[3] = 4
echo The last element of the array is %a[3]%

@echo off
set a[0] = 1
set a[1] = 2
set a[2] = 3
Rem Setting the new value for the second element of the array
Set a[1] = 5
echo The new value of the second element of the array is %a[1]%

:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: ITERATING OVER ARRAY
:: KNOWN SIZE
@echo off
setlocal enabledelayedexpansion
set topic[1] = variables
set topic[2] = Arrays
set topic[3] = Decision making
set topic[4] = Time and date
set topic[5] = Operators

for /l %%n in (0,1,5) do (
echo !topic[%%n]!
)

:: UNKNOWN SIZE
set sources[0]=0
set sources[1]=0
set sources[2]=0for /F "tokens=2 delims==" %%s in ('set sources[') do (
IF NOT EXIST %%s (
CALL:error10 "225" "UNABLE TO LOCATE TARGET FILE %%s "
CALL:ERRORNOTIFYMAIL "UNABLE TO LOCATE TARGET FILE %%s" "FATAL" "CHECK EXISTENCE OF TARGET FILES"
EXIT /B 11
) ELSE (
ECHO TARGET DIRECTORY %%s LOCATED SUCCESFULLY
ECHO.
)
set /a "numberoffilesout+=1"
)

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:: LENGTH OF ARRAY
@echo off
set Arr[0] = 1
set Arr[1] = 2
set Arr[2] = 3
set Arr[3] = 4
set "x = 0"
:SymLoop

if defined Arr[%x%] (
call echo %%Arr[%x%]%%
set /a "x+=1"
GOTO :SymLoop
)
echo "The length of the array is" %x%

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: CREATING ARRAY STRUCTURES
@echo off
set len = 3
set obj[0].Name = Joe
set obj[0].ID = 1
set obj[1].Name = Mark
set obj[1].ID = 2
set obj[2].Name = Mohan
set obj[2].ID = 3
set i = 0
:loop

if %i% equ %len% goto :eof
set cur.Name =
set cur.ID =

for /f "usebackq delims ==. tokens = 1-3" %%j in (`set obj[%i%]`) do (
set cur.%%k = %%l
)
echo Name = %cur.Name%
echo Value = %cur.ID%
set /a i = %i%+1
goto loop

``````
``1. DOS_ARRAYS``