[reyzell]

I am having a problem using a const static char array as a class data member. Below is a simplification of my problem. The variable sStatic can be declared and initialized, but simply can't be accessed.

Thanks for any help,

Harvo


The compile command:

%> c++ t.cpp


The compiler response:

/usr/bin/ld: Undefined symbols:
__4Test.sStatic


The source file (each of the cerr statements alone produces the above error):

#include <iostream>

class Test {

public:
const static char sStatic[][15] = { "hello", "goodbye" };

Test() {

cerr << Test::sStatic[0] << endl;
cerr << sStatic[0] << endl;

}
};

int main() {
Test t;

cerr << t.sStatic[0] << endl;
cerr << Test::sStatic[0] << endl;

return 0;
}

[smeger]

It's been a while since I've played with C++, but IIRC, you need to initialize your static const outside of the class definition so it's got file scope. Try this...

<BLOCKQUOTE><font size="1"face="Geneva, Verdana, Arial">code:</font><HR><pre><font size=1 face=courier>
#include &lt;iostream&gt;

class Test {

public:
const static char sStatic[][<font color = blue>15</font>];

Test() {

cerr &lt;&lt; Test::sStatic[<font color = blue>0</font>] &lt;&lt; endl;
cerr &lt;&lt; sStatic[<font color = blue>0</font>] &lt;&lt; endl;

}
};

Test::sStatic = { <font color = red>"hello"</font>, <font color = red>"goodbye"</font> };

</font>[/code]

[reyzell]

I tried you're idea, and you're close. Below is what actually worked. The initialization of the variable requires the same declaration without the "static" keyword.

Thanks

#include &lt;iostream&gt;

class Test {

public:
const static char sStatic[][15];

Test() {

cerr &lt;&lt; Test::sStatic[0] &lt;&lt; endl;
cerr &lt;&lt; sStatic[0] &lt;&lt; endl;

}
};

const char Test::sStatic[][15] = { "hello", "goodbye" };

int main() {
Test t;

cerr &lt;&lt; t.sStatic[0] &lt;&lt; endl;
cerr &lt;&lt; Test::sStatic[0] &lt;&lt; endl;

return 0;
}

[Detrius]

In addition, I don't believe class member variables can be initialized inside the class definition. You have to create a constructor to initialize the variables. (of course, if they're public, you can initialize them however you want.)