中国DOS联盟

@echo off&TITLE Decimal to Binary&color 02
:begin
cls&set/p var=Input a decimal number: 
echo %var%|findstr /i /v "[a-z]">nul||goto begin
set vari=%var%
:1
set/a ws=%var%%%2
set/a var/=2
set str=%ws%%str%
if %var% neq 0 goto 1
echo.&echo 十进制数 ^<%vari%^> 转换2进制为 ^<%str%^>.
set str=&set var=
pause>nul&goto begin

@echo off&title Binary to Decimal&color 0a
:begin
cls&set/p var=Input a binary number: 
echo %var%|findstr /v "[2-9a-z]">nul||goto begin
set varia=%var%&set vari=%var:~-1%&set var=%var:~0,-1%
set x=1

:1
set pus=%var:~-1%
set/a n+=1
for /l %%a in (1 1 %n%) do set/a x*=2
set/a m=pus*x
set/a z+=m
set var=%var:~0,-1%
set x=1
if defined var goto 1
if %vari% equ 1 set/a z+=1
echo.&echo 二进制数 ^<%varia%^> 转换10进制为 ^<%z%^>.
set n=0&set z=
pause>nul
goto begin