fig16_03.cpp

来自「是有关C++编程原理教程的例子程序,全,应该对大家有所帮助」· C++ 代码 · 共 63 行

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

#include <exception>
using std::exception;

// throw, catch and rethrow exception
void throwException() 
{
   // throw exception and catch it immediately
   try 
   {
      cout << "  Function throwException throws an exception\n";
      throw exception(); // generate exception
   } // end try
   catch ( exception & ) // handle exception
   {
      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 ( exception & ) // handle exception
   {
      cout << "\n\nException handled in main\n";
   } // end catch

   cout << "Program control continues after catch in main\n";
   return 0;
} // end main



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