小编And*_*ndy的帖子

如果我这样做：

//... in .h header:

class MyCustomException : public std::exception{
  private:
    string message;

  public:
    MyCustomException (string msg); //in .cpp implements "message = msg"
    ~MyCustomException() throw(){ }
    string what(); //implemented to return message.

}

//... other code ... in cpp:

if (<blah blah blah>){
  throw MyCustomException("I want to see THIS message when I fail ... but I don't...");
}

//... more code, in cpp:

//try{<blah...>}
catch(const:: std::exception& e){
   cout << e.what() << endl << flush; //just prints "std::exception" ... same if …