lvyaojian

1.

@echo off
set /a sum=0
for /l %%i in (1,1,100) do (
set /a sum=sum+%%i
)
echo %sum%
pause
复制代码

2.

@echo off
set /p n=输入N：
set /a sum=0
for /l %%i in (1,1,%n%) do (
set /a sum=sum+%%i
)
echo %sum%
pause
复制代码