Example inline, __inline, and __forceinline When to use inline functions Inline functions vs. macros See also Theinlinekeyword suggests that the compiler substitute the code within the function definition in place of each call to that function. ...
Once you have declared the function, it can be called from other parts of the program. And when there is a function call to the function inline, the compiler simply replaces the call statement with the inline function definition. Here is an example of defining an inline function in C++: ...
The three types of inlining behave similarly in two important cases: when the inline keyword is used on a static function, like the example above, and when a function is first declared without using the inline keyword and then is defined with inline, like this: extern int inc (int *a); ...
15 C++ - 内联函数(inline function) 1. 内联函数的引出 c++从c中继承的一个重要特征就是效率。假如c++的效率明显低于c的效率,那么就会有很大的一批程序员不去使用c++了。 在c中我们经常把一些短并且执行频繁的计算写成宏,而不是函数,这样做的理由是为了执行效率,宏可以避免函数调用的开销,这些都由预处理来完...
C/C++都支持带参宏、内联函数 带参宏 参考 宏——基础 宏——高级 代码演示 #include<stdio.h> intmy_max(inta,intb) { a*=; b/=; return(a>b)?a:b;//找出最大值 } intmain(void) { intret=; ret=my_max(,); printf("ret = %d\n",ret); ...
Your code is not valid C, because it provides duplicate external definition of function func1. Note that it is func1, not func3 that is problematic from the C point of view. There's nothing formally wrong with your func3. Your func2 is also OK, as long as the two definitions never ...
In C, inline functions are treated by default as havingstaticlinkage; that is, they are only visible within a single translation unit.Therefore, in the following example, even though functionfoois defined in exactly the same way,fooin filea.candfooin fileb.care treated as separate functions:...
Inline function is introduced which is an optimization technique used by the compilers especially to reduce the execution time. We will cover “what, why, when & how” of inline functions. 在C中,我们使用了宏函数,这是编译器使用的一种优化技术,可以减少执行时间等。所以问题是C ++中有什么内容以及...
in C, the definitions may be different, and depending on the differences only results in unspecified behavior). On the other hand, C++ allows non-const function-local statics and all function-local statics from different definitions of an inline function are the same in C++ but distinct in C...
Inline Function Example in C++ /*C++ program to demonstrate Inline Function.*/#include<iostream>usingnamespacestd;//inline keyword is only use in declaration.inlineintfun();intmain(){fun();return0;}intfun(){cout<<"I am from inline function"<<endl;return0;} ...