CMD 在一个变量中隔离一个变量

Question

if [!PointX%N%:~1,1!] == [] (echo Good) Else (echo Bad!)

代码杀死批处理文件并读取：

1!] was unexpected at this time.

完整代码是

echo off
Setlocal EnableDelayedExpansion
set /a N=1
set /a R=1
:loop
cls
echo.
echo.
echo.
echo.
if %R% EQU 1 (set /p Points=How many points do you have? ) ELSE (
echo You have %points% Total Points & echo You have %left% Points Left to Plot)
echo.
set /p PointX%N%=PointX%N% equals? 
set /p PointY%N%=PointY%N% equals? 
cls
if [!PointX%N%:~1,1!] == [] (echo Good) Else (echo Bad!)
pause
if %N% GEQ %R% (goto :Fin) ELSE (set /a N=%N%+1 & set /a R=2 & goto :loop)
:Fin
exit

任何帮助将不胜感激

Answer 1

, 是批处理中的标准分隔符 - 就像 space。尝试使用引号 - 这将包含表达式：

if "!PointX%N%:~1,1!" equ "" (echo Good) Else (echo Bad!)

CMD 在一个变量中隔离一个变量

CMD Isolated a Variable Inside a Variable

command-line

cmd

batch-file

command-prompt

command-line-arguments