Les macros de type objet ne prennent aucun argument. Les macros de type fonction peuvent être définies pour accepter des arguments, afin qu’elles ressemblent et agissent comme des appels de fonction. Étant donné que les macros ne génèrent pas d’appels de fonction réels, vous ...
Macros de preprocesador (C/C++) Macros de preprocesador y C++ Macros de preprocesador variádicas Macros de preprocesador predefinidas Resumen de la gramática del preprocesador (C/C++) Directivas pragma y la palabra clave __pragma Deskargatu PDFa ...
macros. (In C++, inline functions are often a preferred method.) However, macros can create problems if you don't define and use them with care. You may have to use parentheses in macro definitions with arguments to preserve the proper precedence in an expression. Also, macros may not ...
#macros.h 有用的 C #宏 这是我在网上找到的常用 C 宏的集合,也是我朋友推荐的。 为什么这很棒 使用C 宏,我们可以使用许多有用的功能扩展 C。 例如,我们可以创建像 foreach 这样的循环,这在处理数组时非常有用和方便。 这些在大多数高级语言中都可用,但在 C 中不可用。但是我们在 C 中有宏,所以我们...
1.The Connect Macros:## 这是一个预处理连接符,这个操作符主要用来将两个符号连接成为一个完整的宏符号。通过下面的代码,可以看到其具体的使用方法: 如下例子: #include<stdio.h>structmacro{intN;charM; };structmacromacro_drv = {100,20};#defineXNAME(n) x##n#defineMacro(x) x##_drv.Nintmain(...
The Xlib interface provides a number of useful C language macros and corresponding functions for other language bindings which return data from the Display structure.The function versions of these macros have the same names as the macros except that the function forms begin with the letter “X.”...
MACROS are always evaluated before the compilation process begins. So this code has nothing to worry about and it should work fine. At the same time, this whole thing is the compiler dependent, I believe with gcc it will work fine. Maybe, for some bare-metal application, it may give a ...
Macros using #define A macro is a fragment of code that is given a name. You can define a macro in C using the #define preprocessor directive. Here's an example. #define c 299792458 // speed of light Here, when we use c in our program, it is replaced with 299792458. Example 1: ...
当然就可以成为“object”了。函数式宏(带参宏)define定义的宏,也可以模拟接近于函数的效果,我们把这种宏称为Function-like macros,中文就是函数式的宏。它和对象式宏的区别就是标识符后面会有一对小括号,小括号里是若干个类似函数形参的符号,这些参数在“替换列表”中必须是对应的。举例如下:#...