预处理器的可能性 [英] Preprocessor possibilities

问题描述

是否可以编写一个宏（在未扩展的C89中），以便


TEST（int，（1,2,3））;


扩展为


int array [] = {1,2,3};


？我强烈怀疑它不是，但我不想忽视一个

解决方案（如果存在的话）。


-

Christopher Benson-Manica |我*应该*知道我在说什么 - 如果我

ataru（at）cyberspace.org |不，我需要知道。火焰欢迎。

解决方案

Christopher Benson-Manica写于12/13/05 12:39 ，：

是否可以编写一个宏（在未扩展的C89中），以便

TEST（int，（1,2,3））;

扩展到

int array [] = {1,2,3};

？我强烈怀疑它不是，但我不想忽视一个
解决方案，如果存在。

#define TEST（类型，列表）type array [] = {list}


这看起来很简单 - 我不知怎的

误读了你的问题？


-
Er ********* @ sun.com

Eric Sosman写道：

Christopher Benson-Manica写道12/13 / 05 12:39，：

是否可以编写一个宏（在未扩展的C89中），以便

TEST（int，（1,2,3））;

扩展到

int array [] = {1,2,3};

？我强烈怀疑它不是，但我不想忽视一个
解决方案，如果存在。

#define TEST（type，list）类型数组[ ] = {list}

这看起来非常简单 - 我不知何故
误读了你的问题？

-
Er ********* @ sun.com

括号怎么样？我想他正试图避免C99 varargs

宏。


-David


blockquote>
< blockquote> David Resnick< ln ******** @ gmail.com>写道：

括号怎么样？我想他正试图避免使用C99 varargs
宏。

是的，我是。我正在处理一个不支持C99 varargs宏的C ++实现（等等）。


-

Christopher Benson-Manica |我*应该*知道我在说什么 - 如果我

ataru（at）cyberspace.org |不，我需要知道。火焰欢迎。

Is it possible to write a macro (in unextended C89) such that

TEST( int, (1,2,3) );

expands to

int array[]={ 1,2,3 };

? I strongly suspect that it is not, but I don''t wish to overlook a
solution if one exists.

--
Christopher Benson-Manica | I *should* know what I''m talking about - if I
ataru(at)cyberspace.org | don''t, I need to know. Flames welcome.

解决方案

Christopher Benson-Manica wrote On 12/13/05 12:39,:

Is it possible to write a macro (in unextended C89) such that

TEST( int, (1,2,3) );

expands to

int array[]={ 1,2,3 };

? I strongly suspect that it is not, but I don''t wish to overlook a
solution if one exists.

#define TEST(type,list) type array[] = { list }

This seems pretty straightforward -- have I somehow
misread your question?

--
Er*********@sun.com

Eric Sosman wrote:

Christopher Benson-Manica wrote On 12/13/05 12:39,:

Is it possible to write a macro (in unextended C89) such that

TEST( int, (1,2,3) );

expands to

int array[]={ 1,2,3 };

? I strongly suspect that it is not, but I don''t wish to overlook a
solution if one exists.

#define TEST(type,list) type array[] = { list }

This seems pretty straightforward -- have I somehow
misread your question?

--
Er*********@sun.com

What about the parenthesis? I think he is trying to avoid C99 varargs
macros.

-David

David Resnick <ln********@gmail.com> wrote:

What about the parenthesis? I think he is trying to avoid C99 varargs
macros.

Yes, I am. I am dealing with a C++ implementation that does not
support the C99 varargs macros (among other things).

--
Christopher Benson-Manica | I *should* know what I''m talking about - if I
ataru(at)cyberspace.org | don''t, I need to know. Flames welcome.

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