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1. Top results related to define reread function in c++ c

   • C++ lambda function in macro define

     Top Answer

     Answered Feb 17, 2021 · 4 votes

     how IReplayController *r pass to the marco when this function is called?

     It isn't. All the macro does is change a line in your code like

     INVOKE_MEMFN(my_function_name)-

     to

     m_Ctx.Replay().AsyncInvoke([this](IReplayController *r) { my_function_name(r); });-

     It is AsyncInvoke that is taking the lambda and it will pass the IReplayController* to the lambda.

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     1/5

   • C++ & C#, how to create wrapper dll in C++ for C# to call instance function in C++ dll?

     Top Answer

     Answered Jun 16, 2010 · 2 votes

     Oops, didn't read the question quite correctly. Check out this article, http://www.codeguru.com/Cpp/Cpp/cpp_managed/interop/article.php/c6867/

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     2/5

   • C function calls in C++ class namespace

     Top Answer

     Answered Nov 24, 2012 · 7 votes

     Presumably you want to call write(2), which is in the global namespace:

     ::write(filedes, str.c_str(), str.length());-

     (you might need to #include <unistd.h>).

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     3/5

   • C/C++ array variable in function header

     Top Answer

     Answered Oct 29, 2012 · 10 votes

     For any (non-reference) type T, the function signatures R foo(T t[]) and R foo(T t[123]) (or any other number) are identical to R foo(T * t), and arrays are passed by passing the address of the first element.

     Note that T may itself be an array type, such as T = U[10].

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     4/5

   • C++ : how to define a function in main and then pass it as an argument

     Top Answer

     Answered Jun 16, 2021 · 1 votes

     Using lambdas and refraining from using the operator keyword we get:

     #include <iostream>-void apply_operator(void (*op)(int, int), int x, int y){ op(x, y);}int main(){ auto add = [](int x, int y) { std::cout << (x + y) << std::endl; }; int a = 1; int b = 2; apply_operator(add, a, b);}

     Which prints 3 as expected.

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     5/5

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2. stackoverflow.com › questions › 617554Override a function call in C - Stack Overflow

   stackoverflow.com › questions › 617554

   Alias the function you want to override to a weakly-defined function, and then reimplement it yourself. override.h. #define foo(x) __attribute__((weak))foo(x) foo.c. function foo() { return 1234; } override.c. function foo() { return 5678; } Use pattern-specific variable values in your Makefile to add the compiler flag -include override.h.

3. stackoverflow.com › questions › 58595394Redefine a C function in C++ - Stack Overflow

   stackoverflow.com › questions › 58595394

   • Cached

   I can, in my calling C++ code, simply override the behaviour of exit with. extern "C" void exit(int status) {. throw 1; } exit is an identifier reserved by the C standard library, and void exit(int) is a function signature reserved by thexitWithErrore C++ standard library.

4. isocpp.org › wiki › faqMixing C and Cpp - Standard C++

   isocpp.org › wiki › faq

   • Cached

   How do I call a C++ function from C? Just declare the C++ function extern "C" (in your C++ code) and call it (from your C or C++ code). For example: // C++ code: extern "C" void f(int); void f(int i) { // ... } Now f() can be used like this:

5. en.cppreference.com › w › cppFunction declaration - cppreference.com

   en.cppreference.com › w › cpp

   • Cached

   3 days ago · A function declaration introduces the function name and its type. A function definition associates the function name/type with the function body.

6. en.cppreference.com › w › cFunction definitions - cppreference.com

   en.cppreference.com › w › c

   • Cached

   4 days ago · A function definition associates the function body (a sequence of declarations and statements) with the function name and parameter list. Unlike function declaration, function definitions are allowed at file scope only (there are no nested functions). C supports two different forms of function definitions:

7. learn.microsoft.com › en-us › cpp#define directive (C/C++) | Microsoft Learn

   learn.microsoft.com › en-us › cpp

   • Cached

   Aug 2, 2021 · Syntax. #define identifier token-stringopt. #define identifier ( identifieropt, ... , identifieropt ) token-stringopt. Remarks. The #define directive causes the compiler to substitute token-string for each occurrence of identifier in the source file. The identifier is replaced only when it forms a token.

8. www.geeksforgeeks.org › c-define-preprocessor#define in C - GeeksforGeeks

   www.geeksforgeeks.org › c-define-preprocessor

   • Cached

   Jul 14, 2023 · In C programming, #define is a preprocessor directive that is used to define macros. The macros are the identifiers defined by #define which are replaced by their value before compilation. We can define constants and functions like macros using #define.