Method operator+

test/exceptions.cpp:41–47

    }

    ScalarWithExceptions operator+(const ScalarWithExceptions& other) const
    {
      countdown--;
      if(countdown<=0)
        throw my_exception();
      return ScalarWithExceptions(*v+*other.v);
    }
    
    ScalarWithExceptions operator-(const ScalarWithExceptions& other) const
    { return ScalarWithExceptions(*v-*other.v); }