template function

#include <iostream>
using namespace std;

template <class T>
class Sum
{
public:
    T a, b;
    T sum(T a, T b)
    {
        T c;
        c = a + b;
        return c;
    }
};

int main()
{
    Sum <int>a1;
    cout << "Sum of 2 integer data-types is: " << a1.sum(4, 7) << endl;
    Sum<float> a2;
    cout << "Sum of 2 float data-types is: " << a2.sum(3.6, 4.2) << endl;

    return 0;
}