How to throw good exceptions?

Question

I heard you should never throw a string because there is a lack of information and you\'ll catch exceptions you dont expect to catch. What are good practice for throwing exc

Answer 1

Here is a simple example of throwing an exception that takes barely any resources:

class DivisionError {};
class Division
{
public:
    float Divide(float x, float y) throw(DivisionError)
    {
        float result = 0;
        if(y != 0)
            result = x/y;
        else
            throw DivisionError();
        return result;
    }
};

int main()
{
    Division d;
    try
    {
        d.Divide(10,0);
    }
    catch(DivisionError)
    {
        /*...error handling...*/
    }
}

The empty class that is thrown does not take any resource or very few...