hi all~

i read this in a book which showed me an example with const reference in template:
Code:
template <class T>
T Abc(const T& a, const T& b, const T& c)
{
    return a + b + b * c + (a + b - c) / (a + b) + 4;
}
it didnt mention the advantages using const reference here, any ideas ?

thanx~