please use the c++, finish the code CS 23001 Spring 2017 Page 4 of 5 M. Decker (

Question

please use the c++, finish the code

CS 23001 Spring 2017 Page 4 of 5 M. Decker (25pts) Write a class for the ADT darray. You must use a dynamic array of int. You must implement the 4 methods below (that are not already implemented). Each should behave as one would expect in C++. The assignment must implement standard copy semantics. 6. //CLASS INV: data->int [ cap] && cap >= 0 class darray f private: int * data; int cap; public: darray darray darray darray() operator= () : data(0), cap (O) t/I darray of capacity o. (int); (const darray&); //1) darray of capacity n. 1/2) Copy Constructor //3) Destructor //4) Assignment darray& (darray);

Explanation / Answer

Here is the class implemented for you:

//CLASS INV: data->int[cap] && cap >= 0
class darray
{
    private:
        int* data;   //The pointer to hold the array.
        int cap;   //The capacity of the array.
    public:
        darray() : data(0), cap(0) {} //darray of capacity 0.
        darray(int);   //darray of capacity n.
        darray(const darray&);   //Copy constructor.
        ~darray ();
    darray& operator= (darray);  
};
darray::darray(int capacity)
{
    cap = capacity;
    data = new int[cap];
}
darray::darray(const darray& other)
{
    cap = other.cap;
    data = new int[cap];
    for(int i = 0; i < cap; i++)
        data[i] = *(other.data + i);
}
darray::~darray()
{
    delete data;
    cap = 0;
}
darray& darray::operator=(darray other)
{
    cap = other.cap;
    data = new int[cap];
    for(int i = 0; i < cap; i++)
        data[i] = *(other.data + i);
    return *this;
}

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