// Fig. 16.3: Fig16_03.cpp
// Demonstrating exception rethrowing.
#include <iostream>
#include <stdexcept>
using namespace std;

// throw, catch and rethrow exception
void throwException() 
{
   // throw exception and catch it immediately
   try 
   {
      cout << "  Function throwException throws an exception\n";
      throw runtime_error("[My_Exception]"); // generate exception
   } // end try
   catch ( runtime_error& e) // handle exception
   {
       cout << e.what() << '\n';
      cout << "  Exception handled in function throwException"
         << "\n  Function throwException rethrows exception";
      throw; // rethrow exception for further processing
   } // end catch

   cout << "This also should not print\n";
} // end function throwException

int main()
{
   // throw exception
   try 
   {
      cout << "\nmain invokes function throwException\n";
      throwException();
      cout << "This should not print\n";
   } // end try
   catch ( runtime_error& e) // handle exception
   {
      cout << "\n\nException handled in main\n";
      cout << "main() also receives the message" << e.what() << endl;
   } // end catch

   cout << "Program control continues after catch in main\n";
} // end main



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