Include another option/file While selecting specific Options - batch-file

Question

I made a simple batch file to execute a executable via some options which are provided upon launch.
Some thing like this :
:A
Echo Option 1
Echo Option 2
Set /p set1=Choice :
if %set1%==1 set A=Set1_1
if %set1%==2 set A=Set1_2
goto Set_2
:B
Echo Option A
Echo Option B
Set /p set2=Choice :
if %set2%==A set B=Set2_A
if %set2%==B set B=Set2_B
goto launch
:launch
program.exe -%A% -%B%
So basically this works. But what i need to have is a way to include another launch parameter for my program if both "Option 1" and "Option A" are selected. Not in "Option 2" and "Option B".
so that my launch look like this
program.exe -%set1% -%set2% -%if1_A%
Edit : i've made some mistakes here on this command line but i won't correct it since #avery_larry pointed it out.
I'm sorry if i made this confusing, please let me know if need to clarify or elaborate further. :)

Answer 1

untested
If a variable is not set to anything, then it will expand to nothing. Setup your 3rd variable and make sure it's not set if the conditions aren't met. Something like this:
set if1_a=
if "%set1%"=="1" (
if "%set2%"=="A" (
set "if1_a=-option"
)
)
program.exe -%set1% -%set2% %if1_A%
Note that I made the hyphen part of the variable. Also it's probably supposed to be:
program.exe -%A% -%B% %if1_A%
and finally you probably want to use if /i to make it case insensitive.

Answer 2

Whilst your question may have been using the input options just for the purposes of the question, and not real world ones; as they are known options, I've decided to provide a solution which uses the more robust built-in choice.exe command:
#Rem Undefine any existing variables to be used.
#For /F "Delims==" %%G In ('Set Opt[ 2^>NUL')Do #Set "%%G="
#Rem Request first argument.
#"%__APPDIR__%choice.exe" /C 12 /M "First argument"
#Rem Define the first argument with the value chosen.
#Set "Opt[1]=%ERRORLEVEL%"
#Rem Request second argument.
#"%__APPDIR__%choice.exe" /C AB /M "Second argument"
#Rem Define the second argument with the value chosen.
#If ErrorLevel 2 (Set "Opt[2]=B")Else (Set "Opt[2]=A"
Rem Define third argument if first chosen was 1
If %Opt[1]% Equ 1 Set "Opt[3]=-"Third option string"")
#Rem Launch program with required options.
#Echo program.exe -"%Opt[1]%" -"%Opt[2]%" %Opt[3]%
#Rem Prevent cmd window from possibly closing early.
#Pause

Answer 3

Problems with user input can be avoided through the use of an input validation function, as exampled here:
#Echo off & CD "%~dp0"
TITLE %~n0 & Setlocal
::: / Creates variable /AE = Ascii-27 escape code.
::: - http://www.dostips.com/forum/viewtopic.php?t=1733
::: - https://stackoverflow.com/a/34923514/12343998
:::
::: - /AE can be used with and without DelayedExpansion.
Setlocal
For /F "tokens=2 delims=#" %%a in ('"prompt #$H#$E# & echo on & for %%b in (1) do rem"') do (
Endlocal
Set "/AE=%%a"
)
::: \
%= Remark =%
(Set LF=^
%= NewLine variable to split set /p input line =%)
%= create blank batch file to store and retrieve variables in for automatic reload =%
If not Exist "inputlog.bat" (Echo(#Echo Off>inputlog.bat & Goto :main)
For %%A in ( "%/AE%[36m[%/AE%[34mN%/AE%[36m]ew" , "[%/AE%[34mL%/AE%[36m]oad%/AE%[0m" )Do Echo.%%~A
Choice /N /C nl >nul
If errorlevel 2 (Goto :load)
Goto :Main
:Input <VarName> <Optional - define valid values with each additional parameter>
Set "variable=%~1"
Setlocal EnableDelayedExpansion
IF not "%~2"=="" For %%A in (%*) Do (If not "%%~A"=="%1" (Set "valid=%%~A !valid!"))
:Confirm
%= allow input of variable, test input, store for reloading. =%
Echo(%/AE%[35m
Set /P "input=!variable!!LF!%/AE%[36m{> %/AE%[33m"
IF "!input!"=="" (
Echo(%/AE%[31m!variable! required.
Goto :Confirm
)
IF "%~2"=="" (
ECHO(Set "!variable!=!input!">>inputlog.bat
Endlocal & Set "%variable%=%input%"
Exit /B
)
For %%A in (!valid!) Do (
If /I "!input!"=="%%~A" (
ECHO(Set "!variable!=!input!">>inputlog.bat
Endlocal & Set "%variable%=%input%"
Exit /B
)
)
Echo(%/AE%[31m!variable! required.
Echo(%/AE%[36mSelect from:
For %%A in (!valid!) Do (Echo(%/AE%[33m%%~A%/AE%[0m)
Goto :Confirm
:main
%= define variable (parameter 1) and restrict definition of variables to specified values (additional parameters) =%
Call :Input language english spanish
%= Define multiple variables at once =%
For %%A in ("name" "age" "location" "job" "hobbies") Do (Call :Input %%A)
%= undefine local variables =%
endlocal
%= Display that variable definitions have been removed =%
For %%A in ("language" "name" "age" "location" "job" "hobbies") Do Set %%A
:load
%= Reload the variables from the input Log and display. =%
Call inputlog.bat
%= Demonstrate that variables have been reloaded =%
Setlocal EnableDelayedExpansion
For %%A in ("language" "name" "age" "location" "job" "hobbies") Do (Echo(%/AE%[37m%%~A:!LF!%/AE%[36m%/AE%[33m!%%~A!%/AE%[32m%/AE%[0m)
pause