array size

[vencent]

int main()
{ vector<int> ivec;
  int ix;
  while(cin>>ix)ivec.push_back(ix);
  int iarray[ivec.size()];
  ...// do something with iarray  
}

My understanding: array size should be determined at compile time, in this code the ivec.size() is not known till run time, so is it safe to do so? I checked with a short code and it works.

[Albatross]

Oh, it's perfectly safe to do so for the purposes of making an executable that runs on your system. It's just not proper C++ (yet), yet despite that many C++ compilers support it. I'd stick to proper C++ to ensure that your code will compile with any proper working C++ compiler. :)

-Albatross