for /f "tokens=1,2 delims= " %%i in ('dir/b *.jpg') do ( set /a "n+=1" echo %n% ) 怎什显示不出n的值

for /f "tokens=1,2 delims= " %%i in ('dir/b *.jpg') do ( set /a "n+=1" echo %n% ) 怎什显示不出n的值

for /f "tokens=1,2 delims= " %%i in ('dir/b *.jpg') do (
set /a n+=1
call echo %%n%%
)
即可