unexpected.cpp

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//: C01:Unexpected.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.
// Exception specifications & unexpected(),
//{-msc} (Doesn't terminate properly)
#include <exception>
#include <iostream>
using namespace std;

class Up {};
class Fit {};
void g();

void f(int i) throw(Up, Fit) {
  switch(i) {
    case 1: throw Up();
    case 2: throw Fit();
  }
  g();
}

// void g() {}         // Version 1
void g() { throw 47; } // Version 2

void my_unexpected() {
  cout << "unexpected exception thrown" << endl;
  exit(0);
}

int main() {
  set_unexpected(my_unexpected); // (Ignores return value)
  for(int i = 1; i <=3; i++)
    try {
      f(i);
    } catch(Up) {
      cout << "Up caught" << endl;
    } catch(Fit) {
      cout << "Fit caught" << endl;
    }
} ///:~