Need help with arrays.

[sgill1998]

A default constructor that sets up an initial array of 5 unsigned longs, sets capacity to 5 and used to 0. So, my question is how do I accomplish this. I attempted in the code below.

#include <iostream>

class
{
        public:
                unsigned long int  a[5];
	private:
		unsigned long * data;
		std::size_t used;
		std::size_t capacity;
		
};

Only have been working with c++ for one week.

[closed account 3UohqMoL]

You need to give a name to your class anonymous class isn't a good practice.
and you need to dynamically allocate memory to your class in Ctor and pass parameter as capacity,used so it will be a parameterised Ctor

[sgill1998]

like this?

#include <iostream>

class Numbers
{
 	public:
                Numbers();
		void insert(int item);
		void resize();
		void display();
		Numbers(const Numbers & other);
		void operator = (const Numbers& other);
	private:
		unsigned long * data;
		std::size_t used;
		std::size_t capacity;
		
};

Numbers::Numbers(){
	used = 0; capacity = 5;
}

[closed account 3UohqMoL]

Your post in another thread is correct