Is there any way to store a macro value into a tem开发者_运维问答porary and reuse it. pseudo Example:
I\'m currently looking to calculate the total size of arguments passed into a function, in bytes.In theory, one can just write out sizeof(x) for every argument.However, this is a tremendous waste of t
How can I convert this C define macro to C#? #define CMYK(c,m,y,k)((COLORREF)((((BYTE)(k)|((WORD)((BYTE)(y))<<8))|(((DWORD)(BYTE)(m))<<16))|(((DWORD)(BYTE)(c))<<24)))
Why doesn’t the following code work as expected? void foobar(int); #ifndef foobar printf(\"foobar exists\");
I am programmatically generating bunch of functors, in order to keep the generated code more readable I am trying to come up with a macro that will expand line the following,
I\'m writing a program where a constant is needed but the value for the constant will be determined during run time.I have an array of op codes from which I want to randomly select one and _emit it in
In C++ we can do this: struct { #if defined (BIGENDIAN) uint32_t h; uint32_t l; #else uint32_t l; uint32_t h;
开发者_如何转开发#if sizeof(int) != 4 /* do something */ Using sizeof inside #if doesn\'t work while inside #define it works, why?
I\'m trying to make my iPhone app compatible with the iPad. In a header file I set up some constants. Because of the larger screen I want some constants used for images to be larger on the iPad than o
I\'m working with a library that includes a set of preprocessor libraries.One of them is a FOR_EACH style macro which iterates over a __VA_ARGS__ and calls a user-provided macro for each argument.The
加载中,请稍侯......