Question

I’m trying to catch dividing by zero attempt:

int _tmain(int argc, _TCHAR* argv[])
{
int a = 5;
try
{
int b = a / 0;
}
catch(const exception& e)
{
    cerr << e.what();
}
catch(...)
{
    cerr << "Unknown error.";
}
    cin.get();
return 0;
}

and basically it doesn’t work. Any advice why?
Thank you.
P.S.
Any chance that in the future code can be placed between [code][/code] tags instead of four spaces?

Answer 1

Divide by zero does not raise any exceptions in Standard C++, instead it gives you undefined behaviour. Typically, if you want to raise an exception you need to do it yourself:

int divide( int a, int b ) {
   if ( b == 0 ) {
      throw DivideByZero;    // or whatever
   }
   return a / b;
}