Hint: What the function does is immaterial. We are only interested in the details of the header in the implementation. Use the following for the function body if you wish.

Given the (incomplete) class template below, complete the template and show how to implement the function member whose declaration in class template below is:
void f(T x);
```
{
//whatever f does
}

// template class Problem:
template
class Problem
{
public:
. . .
void f( T x );
private:
int x;
};
```

```
template
void Problem::f( T x)
{
// whatever f does
}
```

A member function is a template and must be implemented with template header. The function is being implemented in the scope of the class so the name requires the class name, template parameter and scope resolution operator.