vector as a Data Member in C++

Question

In C++, how do I include a 101 elements vector as a data member in my class? I\'m doing the following, but it doesn\'t seem to be working:

private:
    std::         


        

Answer 1

If you know you will only ever need 101 elements, use std::array:

class A
{
    //...
private:
    std::array m_data;
};

If you might need more and you just want to give it a default size, use an initializer list:

class A
{
public:
    A() : m_data(101) {} // uses the size constructor for std::vector
private:
    std::vector m_data;
};