c – How do I correctly initialize a member variable of template type?

template
void doSomething ()
{
 T a; // a is correctly initialized if T is a class with a default constructor
 ...
};

 T a{};

T a = T();

I suggest that I have a template function, as shown below:

< p>

template
void doSomething()
{
 T a; // a is correctly initialized if T is a class with a default constructor< br /> ...
};

But if T is a primitive type, the variable a is not initialized. I can write T a(0), but if T is a class, this does not Works. Is there a way to initialize variables in both cases (T == class, T == int, char, bool,…)?

Like this:

T a{};

Before C 11, this is the simplest approximation:

T a = T();

But it requires T to be reproducible (although the copy will definitely Deleted).