extern "C" makes a function-name in C++ have C linkage (compiler does not mangle the name) so that client C code can link to (use) your function using a C compatible header file that contains just the declaration of your function. Your function definition is contained in a binary format...
原文链接:http://www.geeksforgeeks.org/extern-c-in-c/ C++ supports function overloading, i.e., there can be more than one functions with same name and differences in parameters. How does C++ compiler distinguishes between different functions when it generates object code – it changes names ...
This tutorial educates about the use of extern C in C++. It also explains the name mangling in C++.
template <class C> void f(C i) { } } Minimal runnable C from C++ example For the sake of completeness and for the newbs out there, see also:How to use C source files in a C++ project? Calling C from C++ is pretty easy: each C function only has one possible non-mangled symbol,...
extern "C" { void foo(); } extern "C" makes a function-name in C++ have 'C' linkage (compiler does not mangle the name) so that client C code can link to (ie use) your function using a 'C' compatible header file that contains just the declaration of your function. Your function...
Learn about the effect of extern 'C' in C++ and how it impacts function linkage and interoperability between C and C++ code.
error C2059:syntax error:'string' CAUSE In the C language, the string-literal "C" is not recognized. It is used in C++ to prevent name decoration. RESOLUTION Remove the string-literal "C" in extern declarations, or use the following in the function declaration: ...
则限制了变量的作用域，仅对当前文件中的函数可见。下表总结了extern和static对变量作用域的影响：使用extern和static关键字时，理解它们对变量生命周期和作用域的控制至关重要。这有助于编写出更加模块化、可维护且易于理解的代码。参考文献：1. Understanding “extern” keyword in C 2. 静态变量 ...
extern关键字还有一个重要的用途是用于链接C和C++代码。当我们在C++代码中使用extern "C"时,我们告诉编译器按照C语言的规则来链接代码。 例如,如果我们有一个C语言的库文件(比如clib.c),我们可以在C++代码中通过extern "C"来引用这个库。 // clib.c void c_func() { // function definition in C } // ...
extern关键字还有一个重要的用途是用于链接C和C++代码。当我们在C++代码中使用extern "C"时,我们告诉编译器按照C语言的规则来链接代码。 例如,如果我们有一个C语言的库文件(比如clib.c),我们可以在C++代码中通过extern "C"来引用这个库。 // clib.cvoid c_func() {// function definition in C}// main....