Minimal C++ Exceptions with exception class

throwclass.cpp

// example program which throws a class exception
#include <iostream>
using namespace std;

// my error class
class WrongFormat{
   public:
      string what(){
         return string("Wrong Format!");
      }
};

int main(){
   try{
      // oh no, something bad happened
      throw WrongFormat();
   }catch(WrongFormat w){
      cout << w.what() << endl;
   }
}

throwstring.cpp

// example program which just throws a string exception
#include <iostream>
using namespace std;

int main(){
  try{
    // oh no, something bad happened
    throw string("something happen");
  }catch(string s){
    cout << "Error: " << s << endl;
  }
}