QBasic语言规范
我受到一个朋友的挑战，用QBasic编写一个QBasic编译器。
在哪里可以找到该语言最新版本的语言规范？
I have been challenged by a friend to write a QBasic compiler in QBasic.
Where can I find a language specification for the latest version of the language?
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Microsoft 的 QBasic IDE 附带了相当完整的语言文档和提供的例程。据我所知，这大概是您能找到的最完整的规范，但除了未记录的 DOS 特定的 peek/poke 魔法之外，它应该足以为（大部分）语言编写编译器。
Microsoft's QBasic IDE comes with fairly complete documentation of the language and provided routines. So far as I know, that is about as complete a specification as you'll find, but it should be enough to write a compiler for (most of) the language, aside from undocumented DOS-specific peek/poke magic.
QB64 是 QBasic 的一个很好的克隆/扩展，它有一个 wiki，其中包含非常详细的 语言参考 按字母顺序、用法排序，或 语法上。
注意：以下划线（“_”）前缀的关键字是不属于经典 QBasic 语言的扩展。
QB64 is a nice clone/extension of QBasic which has a wiki that contains a very detailed language reference sorted alphabetically, by usage, or syntactically.
Note: keywords prefixed with an underscore ('_') are extensions that were NOT part of the classic QBasic language.
QuickBasic 4.5可以编译成*.exe
QuickBasic 4.5 can compile into *.exe
您只需在浏览器中输入：
QB64即可找到最新版本 - 这就是现在所谓/重做的 QBasic 版本，具有更大的机会。他们有自己的论坛、YT 频道，甚至Discord。顺便说一句，他们刚刚制作了新的 1.5 版本！
You can find the latest version by just typing in your browser:
QB64- it's how it is nowadays called/redone version of QBasic with a bigger aspect of opportunities. They have their forum, YT Channel and even Discord.BTW they've just made a new 1.5 version!