//: C01:StdExcept.cpp
// From "Thinking in C++, Volume 2", by Bruce Eckel & Chuck Allison.
// (c) 1995-2004 MindView, Inc. All Rights Reserved.
// See source code use permissions stated in the file 'License.txt',
// distributed with the code package available at www.MindView.net.
// Derives an exception class from std::runtime_error.
#include <stdexcept>
#include <iostream>
using namespace std;

class MyError : public runtime_error {
public:
  MyError(const string& msg = "") : runtime_error(msg) {}
};

int main() {
  try {
    throw MyError("my message");
  } catch(MyError& x) {
    cout << x.what() << endl;
  }
} ///:~