How to define a complex macro with argument (function like macros)?Read: Complex macro with arguments (function like macro) in C language.2) #undef - Un defining a defined macro#unndef directive is used to un d
Here, we are going to learn how to define macros –In this example, we are defining two Macros YES and NO by using #define preprocessor directive.
You could work around this by requiring the user of the macro not to put a semicolon at the end. However, this is highly unnatural and tends to mess with things like automatic code indenting. A better way to fix it is to wrap the function in ado ... while(0)construct. This construc...
Define Macro as simple function #include <stdio.h> #define SUM(i, j) ((i)+(j)) int main(void) { int sum; sum = SUM(10, 20); printf("%d", sum); return 0; } Related examples in the same category 1. Defining a macro to compare two values 2. Defining a macro to output ...
[root@rockylinux tmp]# cat macro_define.c /** * 宏命定义的注意事项: * 1、带有参数的宏,参数使用时需要写在"()"之中,这样在宏展开时不会改变设计时的运算级别,保证结果正确;* 举例:#define MAX_INT(x,y) (x)>(y)?(x):(y) * 2、多行合并为一行(代码换行):当“宏定义”内容超过一行时...
In a couple of days, I found that the Macro should be as following : // Delay Routine void RoutineDelayMCs(unsigned int interval) { #pragma ASM DJNZ R7, $ DJNZ R6, $-2 #pragma ENDASM } // Delay Macro -> Calculate interval to pass into Delay Routine #define MacroDelayMCs(interval...
define call(x,y) x##y把x和y连接起来，相当于新变量xyxy+call(x,y) 就相当于xy+xy=20+20=40;参考资料：The preprocessor operator ## provides a way to concatenate actual arguments during macroexpansion. If a parameter in the replacement text is adjacent to a ##, the parameter ...
A(x) T_##xdefine B（x) #@xdefine C（x) #x我们假设：x=1，则有：A(1)---〉T_1B(1)---〉'1'C(1)---〉"1"（这里参考了 hustli的文章）3.define的多行定义define可以替代多行的代码，例如MFC中的宏定义（非常的经典，虽然让人看了恶心）define MACRO(arg1, arg2) do {...
c语言define的意思c 英文回答: The "define" in C language is a preprocessor directive that is used to define a constant or a macro. It allows the programmer to give a name to a value or an expression, which can then be used throughout the program. The defined constant or macro is ...
C // Macro to define cursor lines#defineCURSOR(top, bottom) (((top) << 8) | (bottom))// Macro to get a random integer with a specified range#definegetrandom(min, max) \ ((rand()%(int)(((max) + 1)-(min)))+ (min)) ...