初始化常量成员数组? [英] initialize constant member array?

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问题描述



是否可以在类中初始化一个常量的memeber数组?

我尝试了几种语法,但都失败了。


class A

{

public:

A();

~A();

私人:

const int a [4];

};


A :: A():a = {0,1,2,3}

{

}

Hi,
Is it possible to initialize a constant memeber array in a class?
I tried several syntax but all failed.

class A
{
public:
A();
~A();
private:
const int a[4];
};

A::A():a={0,1,2,3}
{
}

推荐答案

Kyle写道:

是否可以在类中初始化一个常量的memeber数组?
我尝试了几种语法,但都失败了。

A级
{
公开:
A();
~A();
私人:
const int a [4] ;
};

A :: A():a = {0,1,2,3}
{
}
Hi,
Is it possible to initialize a constant memeber array in a class?
I tried several syntax but all failed.

class A
{
public:
A();
~A();
private:
const int a[4];
};

A::A():a={0,1,2,3}
{
}



您只能在函数体IIRC中初始化它。例如:使用for

循环,从该常量数组复制,或使用memcpy - 如果数组类型

允许它。


-

Attila aka WW



You can only initialize it inside the function body, IIRC. Eg: with a for
loop, copying from that constant array, or with memcpy - if the arrays type
allows it.

--
Attila aka WW


" Kyle" < ZH ********** @ hotmail.com>在消息中写道

news:40 ******** @ dnews.tpgi.com.au ...
"Kyle" <zh**********@hotmail.com> wrote in message
news:40********@dnews.tpgi.com.au...

是否有可能在类中初始化一个常量的memeber数组?
Hi,
Is it possible to initialize a constant memeber array in a class?




不,不是非静态数组。你为什么这么想?


-Mike



No, not a nonstatic one. Why do you want to?

-Mike


Kyle写道:
Kyle wrote:
是否可以在类中初始化一个常量成员数组?
我尝试了几种语法,但都失败了。
Is it possible to initialize a constant member array in a class?
I tried several syntax but all failed.




struct Array {

int a [4];

};


A级{

私人:

//表示

const数组数组;

public:

A(const Array& a):array(a){}

~A(无效){};

};


int main(int argc,char * argv []){

数组数组= {{0,1,2,3}};

a a(数组);

返回0;

}



struct Array {
int a[4];
};

class A {
private:
// representation
const Array array;
public:
A(const Array& a): array(a) { }
~A(void) { };
};

int main(int argc, char* argv[]) {
Array array = {{0, 1, 2, 3}};
A a(array);
return 0;
}


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