string array of unknown size

[ringo_shells]

Hello all, I am trying to create an array of strings read in from a file; however having no idea how long the file is, means I can't declare the array with a set size, and naturally seg faults occur....

void * server_func(void *t)
{
   cout << "Server Function: "<< (int)t << endl;
   //read in init_buffer_pages.dat
   ifstream init("test_files/init_buffer_pages.dat");
   string * mem_store;

   for(int i = 0; !init.eof(); i++)
   {
      getline(init, mem_store[i], '\n');
      cout << mem_store[i] << endl;
   }

   init.close();
}

(note, the parameter of the function is passed as void * because I'm doing thread programming.)

Now, I'm sure there's some dangerously simple solution, but I can't think of it, and scouring the internet hasn't helped yet, so I'm hoping someone here can smack me on the back of the head (forum post style ) and help me out. lol.

Thank you for your time all.

[Hussain Hani]

then you can load the file, get its size, build an array based on its size

[ringo_shells]

and how would i do that? also would doing that be based on lines in the file? because thats what i have to go on..

[Daved]

Use a vector and push_back each line as you go. The vector grows automatically.

[ringo_shells]

ok sweet will give it a shot!

[ringo_shells]

thanks man, worked a treat!!