如何将FC结果赋值给变量(批处理文件)

@echo off
setlocal

set "file1=path\to\file1.txt"
set "file2=path\to\file2.txt"

fc "%file1%" "%file2%" > nul
if errorlevel 1 (
    echo Files are different.
    set "result=Files are different."
) else (
    echo Files are identical.
    set "result=Files are identical."
)

echo %result%

endlocal