Error creating a size for a vector of Structs C++

Question

This is for a project I am doing for my college class and I could not find an answer for this that worked for me anywhere. Its very likely I did not understand the answers thou

Answer 1

You can do this in C++11 like so

class Menu
{
private:
    std::vector mi = std::vector(20);
};

or if you are stuck using C++03 you will need to initialize it in the constructors initializer list

class Menu
{
public:
    Menu() : mi(20) {}

private:
    std::vector mi;
};