21-7.txt

《C/C++完美演绎》源代码

/* 范例：21-7 嵌套例外处理(Nested Try) */
#include <iostream.h>

int f()
{
  throw runtime_error("RunTime_Error");
}
void main()
{
  try
  {
    try
    {
      try
      {
        throw("测试嵌套例外处理!\n");
        cout << "这个语句将不被输出!\n";
       }
      catch(const char *str1){throw str1;}
     }
    catch(const char *str2)
    {
      cerr << "Failure, Not The Proper Way!!\n" << str2;
    }
    f();
   }
  catch(const exception& e)
  {
    cerr << "执行不当！请勿再做任何动作！\n"<< e.what() << endl;
  }
  cout << "危险!";
  getchar();
}

程序执行结果﹕
Failure, Not The Proper Way!!
测试嵌套例外处理!
执行不当！请勿再做任何动作！
RunTime_Error
危险!