77七

@echo off
if 1 equ 1 (set n=1) else set n=2
echo %n%

set n=
if 1 equ 1 set "n=1" else set n=2
echo %n%

set n=
if 1 equ 1 set n=1 else set n=2
echo %n%

set n=
if 1 equ 2 set n=1 else set n=2
echo %n%
pause
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