有的时候为了程序的通用性,可以使用#define预处理宏定义命令,它的具体作用,就是方便程序段的定义和修改。举个例子吧,如果说你在做一个项目,这个项目的代码很长,有5000多行,而且基本上里面的同一个常量N就占了3000多行,如果说今后你要是想对这个常量N的值进行修改,如果在程序的开始没有定义一...
A better way to fix it is to wrap the function in ado ... while(0)construct. This construct requires a semicolon at the end, which is exactly what we want. Usingwhile(0)ensures that the loop never really loops, and its contents are only executed once. #defineTIME(name, lastTimeVaria...
If you want to use a function across multiple source files, you should declare the function in one header file (.h) and then put the function definition in one source file (.c or .cpp). All code that uses the function should include just the .h file, and you should link the resulti...
define OUT 这些宏定义的主要用途是作为修饰符,用于标记函数参数的类型。例如:void function(IN LPARAM lParam, OUT WPARAM outparam);这里的IN和OUT不表示任何具体的值,只是起到修饰作用,说明lParam是一个输入参数,而outparam是一个输出参数。这样的定义方式不仅有助于开发者快速理解代码意图,还能提...
解析 【答案】A【核心短语/词汇】define:下定义【翻译】定义【解析】A as作为;B be是;C and和;D in在...里面。define是动词,表示“下定义”,固定用法是“define...as...”,表示“给...下定义为...”。故选A。 反馈 收藏
define 是宏定义的意思,即将程序中IN出现的地方用1替代,OUT出现的地方用0替代。用法为 #define 标识符 替换值 include是包含头文件 C
S.c = 15; S.name ='My Name'; S.age = 105; end When you call this function it will return a structure with all of the given variables in it. This is trivial to use: S = myConst(); S.a% use the |a| value Solution Two: Settable Values ...
2)typedef是在编译时处理的。它在自己的作用域内给一个已经存在的类型一个别名,但是You cannot use the typedef specifier inside a function definition。 3)typedef int * int_ptr; 与 #define int_ptr int * 作用都是用int_ptr代表 int * ,但是二者不同,正如前面所说 ,#define在预处理 时进行简单的替换...
define function 定义函数 define relationship 定义关系 define category 定义范畴 define的英语例句 1. Please listen while I define your duties.在我规定你的职责时,请仔细听好.2. Please define the words.请准确地解释这些字的意义.3. It's hard to define exactly what has changed.很难解释...
ISPF provides the binary string data format to support dialog applications written in the C language. When a variable defined as BINSTR is updated in the function pool, ISPF pads with binary zeros. This is desirable within C function programs, because the C language uses binary zeros to mark...