cmd check code in file

 @echo off

@cls

for /F "delims= tokens=1" %%i in (C:\code.txt) do (

IF /I %%i==your_code ( GOTO ISOK ) ELSE ( GOTO ISNG )

)

@echo Check Error

GOTO ISEND

:ISOK

@echo Check Pass

GOTO ISEND

:ISNG

@echo Check Fail

:ISEND

@echo Done