Programming

// Special exception to throw
class exit_exception : public runtime_error
{
  public:
     exit_exception() : runtime_error("Termination"), _code(0) {}
     exit_exception(int code) : runtime_error("Termination"), _code(code){}
     virtual ~exit_exception(){}
     int getStatusCode()const{ return _code; }
  private:
      int _code;
};

// Main function
int main(int argc, char* argv[])
{
    int retcode = 0;
    try {
          // program content...
    }catch(const exit_exception& quit){
         retcode = quit.getStatusCode();
    }
    return retcode;
}

// ...
throw(exit_exception(0)); // Instead of exit(0)
// ...