exctest3.cc

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// Test program to check out the environment exception-handling
 
#include <iostream>
using std::cerr;
using std::endl;
 
 
class Exception  {
public:
  Exception( const char [] )  {}
  virtual ~Exception() {}
  virtual void f() const { cerr << "Exception::f()" << endl; }
};
 
 
class Oops : public Exception  {
public:
  Oops( const char s[] ) : Exception( s )  {}
  virtual ~Oops() {}
  virtual void f() const { cerr << "Oops::f()" << endl; }
};
 
 
int main()  {
 
  try  {
    cerr << "Starting main() ..." << endl;
    cerr << "About to:  throw( Oops(\"Ouch\") )" << endl;
 
    try { throw Oops("Ouch"); }
    catch ( const Exception & x )  {
      x.f();
      throw;
    }
    catch ( ... )  {
      cerr << "Caught unknown!" << endl;
      throw;
    }
 
    // Unreachable statement (we certainly hope!):
    cerr << "The following ought to produce a compilation warning \n"
         << "Got past:  throw( Oops(\"Ouch\") ) -- not good!" << endl;
  }
  catch ( const Oops & egad )  {
    cerr << "Caught:  Oops" << endl;
  }
  catch ( const Exception & egad )  {
    cerr << "Caught:  Exception" << endl;
  }
  catch ( ... )  {
    cerr << "Caught:  don't know what" << endl;
  }
 
  cerr << "Done." << endl;
  return 0;
 
}  // main()