Question

My code does not compile. Below is my code

template <typename T>

class TemplateClass
{

    const T constMember;
    public:

    TemplateClass()
    {
        constMember = T();
    }

};

int main()
{
   TemplateClass <int> obj;
}

I get this error :

error: uninitialized member 'TemplateClass<int>::constMember' with 'const' type 'const int'

I thought that constructor are used to initialize data members. What’s wrong????

Answer 1

You are not initializing the const member, you are just assigning to it.

Initialization of members can only be done using a member initialization list.

For example:

TemplateClass() : constMember(T()) //initializes constMember to 0
{}