如何批量组合变量和文本字符串？

【问题标题】：How do I combine a variable and a text string in batch?如何批量组合变量和文本字符串？
【发布时间】：2018-07-01 17:01:48
【问题描述】：

@echo off
set /a hlo=Hello
:start
echo %hlo%
pause
set /a hlo=%hlo% + World
goto start
pause

我想让hlo 变成“HelloWorld”。

【问题讨论】：

标签： batch-file environment-variables

【解决方案1】：

只需删除/a

set "hlo=Hello"
set "hlo=%hlo% World"

因为set /a 是用来做算术而不是字符串操作

set /?
...
Two new switches have been added to the SET command:

    SET /A expression
    SET /P variable=[promptString]

The /A switch specifies that the string to the right of the equal sign
is a numerical expression that is evaluated.  The expression evaluator
is pretty simple and supports the following operations, in decreasing
order of precedence:
...

【讨论】：

非常感谢！（一个漂亮的菜鸟问题，但很难记住所有这些）;)