How to pass a class object to a template function?

Question

C++ / C#

How to write the MyClass class so that it can be passed to a function as in the example below?

template<typename T>
double suma(T obj);


int main(){
  MyClass myClass;
  suma(myClass);
}

template<typename T>
double suma(T obj){
  return 0;
}

Answer 1

suma<MyClass>(myClass)