把某个目录下所有txt中第三行第四个数字相加

@echo off 
:: 把某个目录下所有txt中第三行第四个数字相加 :: set num=0 setlocal enabledelayedexpansion 
:: 其实用skip=2来跳过头两行的效率更高 for %%i in (*.txt) do ( set file=%%i 
for /f "tokens=1* delims=:" %%j in ('findstr /n . !file!') do ( set var=%%k 
if %%j equ 3 (set num_=!var:~4,1!)&& set /a num=!num!+!num_! ) ) 
echo 相加后的结果是 %num% pause goto :eof@echo off :: 把某个目录下所有txt文件中第十行第三列的数字相加 
:: code by jm 2006-9-9 CMD@XP setlocal enabledelayedexpansion 
for %%i in (*.txt) do ( set file=%%i set count=0 
for /f "skip=9 tokens=3" %%j in (!file!) do ( set /a count+=1 
if !count! equ 1 set /a sum+=%%j ) ) echo 相加后的结果是 %sum% pause