static variable problem

Siemel Naran · *nix forums beginner Joined: 26 Feb 2005 Posts: 35

"Nasim" <nasim.haque@gmail.com> wrote in message

Nasim · *nix forums beginner Joined: 04 Feb 2005 Posts: 1

Hi there,

I am little confused with the code below

//afs.cc
#include<fstream>
using std::ofstream;

struct A {
static ofstream fout;
};

int main() {
A::fout.open("a.dat");
A::fout.close();
return 0;
}

I think the code is ok. And certainly it compiles (g++ -c afs.cc). But
it fails when I wanted the executable (g++ -o afs afs.cc) and gives the
following error

In function 'main':
: undefined reference to 'Test::fout'
collect2: ld returned 1 exit status

I am really surprised with the happening. Please indicate what I am
missing.

Thank you.

Nasim

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