DEFAULT

Variadic macros visual c++

I got the following implementation to get the number of arguments in a variadic macro (currently limited to 16 args). However, for VS the output is always 1, no matter how many arguments are passed. May 03,  · int printf (const char* format, ); Ellipsis mechanism can also be used with preprocessor in a form of a macro. A macro taking a variable number of parameters is called a variadic macro. #define VARIADIC_MACRO() In C++, this ellipsis operator got a new meaning in different context called exception handling. Do you want C or C++? If you're using C, why are you compiling with a C++ compiler? To use proper C99 variadic macros, you should be compiling with a C compiler that supports C99 (like gcc), not a C++ compiler, since C++ doesn't have standard variadic macros.

If you are looking

variadic macros visual c++

C++ Tutorial 18: Preprocessor Commands, time: 15:44

Variadic macros are function-like macros that contain a variable number of arguments. To use variadic macros, the ellipsis may be specified as the final formal argument in a macro definition, and the replacement identifier __VA_ARGS__ may be used in the definition to insert the extra arguments. Do you want C or C++? If you're using C, why are you compiling with a C++ compiler? To use proper C99 variadic macros, you should be compiling with a C compiler that supports C99 (like gcc), not a C++ compiler, since C++ doesn't have standard variadic macros. Jan 13,  · As our MVP says, Variadic Macro is a new feature in Visual C++ , Visual C++ does not support this feature. If you want to use this function of Variadic Macro, you can try to use following Macro instead: Please remember to mark the replies as answers if they help and unmark them if they provide no help. I got the following implementation to get the number of arguments in a variadic macro (currently limited to 16 args). However, for VS the output is always 1, no matter how many arguments are passed. So it's standard from C99 and C++11 onwards, but a GNU extension in C++ As of C++11, variadic macros are now included in standard C++. Section of the C++11 standard specifies variadic macros such that they are compatible with variadic macros from C99 (the second form in the question). Variadic macro. A variadic macro is a feature of some computer programming languages, especially the C preprocessor, whereby a macro may be declared to accept a varying number of arguments. Variable-argument macros were introduced in in the ISO/IEC (C99) revision of the C language standard. afaik, variadic macros aren't part of C++, so almost any combination becomes here hairy.:) – quinmars May 5 '09 at Ah, good point, although they're available by default in g++. I was actually thinking that it's hairy because the first item in the parameter list isn't . Variadic Macros. Likewise, C++ forbids __VA_OPT__ anywhere outside the replacement list of a variadic macro. Variadic macros became a standard part of the C language with C GNU CPP previously supported them with a named variable argument (‘ args ’, not ‘ ’ and __VA_ARGS__), which is still supported for backward compatibility. May 03,  · int printf (const char* format, ); Ellipsis mechanism can also be used with preprocessor in a form of a macro. A macro taking a variable number of parameters is called a variadic macro. #define VARIADIC_MACRO() In C++, this ellipsis operator got a new meaning in different context called exception handling. Hi: The Visual C++ compiler is behaving correctly in this case. If you combine the rule that tokens that match the ' ' at the inital macro invocation are combined to form a single entity (/p12) with the rule that sub-macros are expanded before argument replacement (/p1) then in this case the compiler believes that A2 is invoked with.Variadic macros are function-like macros that contain a variable number The Visual C++ implementation will suppress a trailing comma if no. So I've got a macro that works nicely in GCC, but not in Microsoft's C++ . But you can work around this by not using it directly within a macro call See these URLs for details: * * anoushka-headpieces.de /variadic- With this architecture you can define variadic macros as such. Variadic Macro is a macro that can take variable arguments. Simplest syntax is this: [code]#define FOO() printf(__VA_ARGS__) [/code]It has. A variadic macro is a feature of some computer programming languages, especially the C GNU C++ supports a non-portable extension which solves this . Some compilers (e.g., Visual Studio) will silently eliminate the trailing comma. Variadic macros are supported by a number of compilers. Visual C++ has a few quirks related to variadic macros which require the end-user to code slightly. C++ Portable Varargs for "Variadic Macros" - Portable to GCC and MS Visual Studio - anoushka-headpieces.de When used in Visual Studio / I get compiler errors that say " OPERATOR has no type identifier class" etc. I tried to come up with a fix. So I'm trying to get this example working in Visual Studio , but all variadic macro where the argument list from TEST_THIRD_ARG. Count how many args are in a variadic macro. Only works for . This foundation needs to written in C/C++ to avoid a chicken-and-egg problem. __VA_ARGS__ has changed unter Windows (Visual Studio mode) to use variadic macro parameters as arguments to nested macros. -

Use variadic macros visual c++

and enjoy

see more skype for android tablet 2.2