Thread: My own variable - the array

Ok, so I was creating a program and I ran into a problem. I needed to return an array. Now, usually, I'd just return a pointer, but under the circumstances, I couldn't. So I descided to use the beauty of OOP and create my own variable that carries array info.

So here's my question. How do I program the '[' and ']' operators. Or, even more so, how do I create a variable? This is all I have so far:

PHP Code:

class array
{
    int length;
    int value[100];

    public:
    array(int a[])
    {
        for(int x = 0; x < 100; x++)
        {
            if(!a[x] == NULL)
            {
                a[x] = value[x];
            }
            else
            {
                break;
            }
        }
    }

}; 


I cannot make it global. It would not fit my idea for the program. Plus, you do need '[]'. Try this:

//with the class.....

PHP Code:

int main()
{
array bob = new int[34];
bob[23] = 7;
return(0);
} 


Like this -

Code:

#include <iostream>

using namespace std;

class array
{
    int length;
    int value[100];

    public:
    array(int a[])
    {
        for(int x = 0; x < 100; x++)
        {
            value[x]=a[x];
           
        }
    }

	int& operator[](int ind)
	{
		return value[ind];
	}

};

int main(){

	int arr[100]={0};
	array a(arr);

	a[0]=10;
	cout << a[0];

	
	
  return 0;
}

edit - your constructor was broken, and you can't really test for NULL in an array of ints. Also there's a perfectly good array container in the standard library - std::vector.

Thank you. That's just what I needed.

Say, does anybody know of any good tutorials on declaring operators, etc.?