happyxxdhaha

@echo off&setlocal enabledelayedexpansion
set str=
set /p str=enter the selected number:

:STR_VISTOR
if not defined str goto:eof
echo str = %str%

for /f "tokens=1,*" %%a in ("%str%") do (  
	set a=%%a
	set str=%%b
	if !a! GTR 4 (
		echo nonscript
		goto:nonscript
		) else (
		echo script!a!
		goto:script!a!
	)
)


:script1
echo 1
goto STR_VISTOR

:script2
echo 2
goto STR_VISTOR

:script3
echo 3
goto STR_VISTOR

:script4
echo 4
goto STR_VISTOR

:nonscript
echo invalid number %a%
goto STR_VISTOR
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