// test.cpp#include<stdio.h>#include"add.hpp"voidtest(){inta,b;scanf("%d%d",&a,&b);intc=add(a,b);printf("in test func: %d",c);} // add.hpp#ifndefADD_HPP#defineADD_HPPintadd(inta,intb);#endif // add.cppintadd(inta,intb){returna+b;} 即add.cpp 中的函数在 test.cpp ...
手边只有C标准，就用C标准代替了）If all of the file scope declarations for afunction in a tra...
3. 此外, 正如 cppreference 提及的, C++ 的inline另一个语法点的不同, 即全部内联函数的函数体内定...
In the simple C++ program, we begin by including the essential header file <iostream> for input-output operations and use namespace to avoid prefixing std:: to standard library functions. Then, we define a function called sum() with the inline keyword, indicating that sum() is an inline ...
在b.cpp不能看到magic_number的原因是,对链接器来说,它的名称实际上是生成的命名空间名称。这是因为:namespace { int magic_number = 42; }相当于 namespace some_impossible_to_guess_name { int magic_number = 42; }using namespace some_impossible_to_guess_name; ...
inline 关键字用于函数,有两个作用,第一个作用(相对老版本编译器来说),就是前面说的(指令或者代码替换);而第二个,使得在多个翻译单元(Translation Unit, 在此可以理解为.cc/.cpp等源文件)定义同名同参函数成为了可能。 先看下面的代码: file1.cc
5. By marking it as inline, you can put a function definition in a header file (i.e. it can be included in multiple compilation unit, without the linker complaining) Cons :- 1. It increases the executable size due to code expansion. 2. C++ inlining is resolved at compile time. Whic...
// header file #ifndef EXAMPLE_H #define EXAMPLE_H // function included in multiple source files must be inline inline int sum(int a, int b) { return a + b; } #endif // source file #2 #include "example.h" int a() { return sum(1, 2); } // source file #1 #include "examp...
cppflagsSpecify preprocessor flags. Passed to cpp C preprocessor by Preprocess() in Inline::Filters.use Inline C => <<'END', CPPFLAGS => ' -DPREPROCESSOR_DEFINE', FILTERS => 'Preprocess'; use Inline C => <<'END', CPPFLAGS => ' -DPREPROCESSOR_DEFINE=4321', FILTERS => 'Preprocess'...
/usr/bin/ld: testError.o:infunction`main': testError.cpp:(.text+0x2b): undefined reference to`ErrorCatcher::invalidHashError[abi:cxx11]()' collect2: error: ld returned1exitstatus //File: include/Error.h class ErrorCatcher{ public: ...