[ganselo]

Код:

template<class type>
type test(type a, type b)
{
     return a + b;
}

int main()
{
     cout << test(10, 20);
     cout << test(10.5, 20.2);
}

template<class type1>
class test
{
     public:
     test() {}
     type1 plus(type1 a, type1 b)
    {
        return a + b;
    }
    type1 minus(type1 a, type1 1);
};

template<class type1>
type1 test<type1>::minus(type1 a, type1 b)
{
    return a - b;
}

int main()
{
    test<double> t1;
    test<int> t2;
    
    t1.plus(10.1,10.2);
    t2.minus(1, 2);
}