我致力于一个项目,我相信这个问题可以宏观解决,但鉴于问题的性质,我没有亲身思考的经验。
这里,我期望作为“目标宏观”的投入和产出:
投 票
printf(foobar(Hello World.));
1. 如果形成加工前生产法,其内容如下:
printf((char *)(std::string("")+ H + e + l + l + o + + W + o + r + l + d + . ).c_str());
我假定这种复杂情况是可能的,我希望你们中的一位能够帮助我。
I NEED IT to BE A MACRO, I DO NOT想要在任何地方保持固定不变。
我认为,唯一的解决办法是通过适当的文字来操作你的代码(或许只是一些灯光awk),而代号在您的法典达到事先汇编之前就是这样做的。
根据你们的环境,你可以在视力演播室中作为“前活动”来做,或只是把一个步骤直接添加到你的档案中。
Uh, I fear it is impossible (unless I don t know something). I believe there is no macro to split a given input token (e.g. Hello) into characters building it (H e l l o)
There were some attempts to do such thing, but I fear it is not exactly what you need:
"More powerful precompiler" ?
Macros are basically substitution or addition of strings. You could do this with a pre-processor of your own, but the standard pre-processor won t split strings into component parts.
How about this: Put all these (assuming there is more than one) macros in a separate file. Write a program that translates them into the expansion you require and then include THAT file in your c program? You could then make the expansion program part of your make file so it s always up to date. Using a separate file makes the expansion program much easier than parsing a c/c++ file.
既然你重新寻找对你的问题的狭隘、直接的回答,而没有提出建议,那么:
这是不可能的。 你们必须找到另一种解决办法,解决你们重新努力实现的目标。
您:
#define toString(x) #x
你们可以这样做:
printf("%s", toString(hello world));
Don t试图直接使用插图,因为你在插图中可以有格式的光谱。
printf(toString(hello world)); //wrong, you can have for example %d in the string
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