条件子句的复杂程度 [英] How complex the conditional clause is allowed

问题描述

某些人喜欢


返回（a == b）？a :(（b == c）？：..）........... .....


谢谢

解决方案

Peter Liu skrev：

有些像


返回（a == b）？a :(（b == c）？：..）................


谢谢

没有限制。你的编译器可能有一个，但你不太可能会遇到它。所以请继续使用机器生成的代码

;-)

/ Peter

Peter Liu写道：

主题：允许条件子句有多复杂

It在这些部分周围被认为是不好的形式，而不是把你的问题放在帖子的

正文中。

有些像


返回（a == b）？a :(（b == c）？：..）................

标准没有施加限制。它建议编译器应该

在

完整表达式中支持至少256个带括号的表达式嵌套级别。

Best


Kai-Uwe Bux

Peter Liu写道：

喜欢


返回（a == b）？a：（（b == c）？：..）................

这是合法且有用的。


返回a == b？ 1

：a == c？ 2

：a == d？ 3

：4;


-


- Pete

Roundhouse咨询有限公司（ www.versatilecoding.com ）

作者The Standard C ++ Library Extensions：a Tutorial and

Reference。 （ www.petebecker.com/tr1book ）

someting like

return (a==b)?a:((b==c)?:..)................

thanks

解决方案

Peter Liu skrev:

someting like

return (a==b)?a:((b==c)?:..)................

thanks

There is no limit. Your compiler might have one, but it is unlikely you
will encounter it. So just go ahead with your machine-generated code
;-)

/Peter

Peter Liu wrote:

Subject: How complex the conditional clause is allowed

It is considered poor form around these parts not put your question in the
body of your post.

someting like

return (a==b)?a:((b==c)?:..)................

The standard does not impose a limit. It recommends that a compiler should
support at least 256 nesting levels of parenthesized expressions within a
full expression.
Best

Kai-Uwe Bux

Peter Liu wrote:

someting like

return (a==b)?a:((b==c)?:..)................

This is legal and useful.

return a == b ? 1
: a == c ? 2
: a == d ? 3
: 4;

--

-- Pete
Roundhouse Consulting, Ltd. (www.versatilecoding.com)
Author of "The Standard C++ Library Extensions: a Tutorial and
Reference." (www.petebecker.com/tr1book)

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