Create array class - C++ Class

C++ examples for Class:Member Function

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Description

Create array class

Demo Code

#include <iostream>
using namespace std;
class Array                     //models a normal C++ array
{
private://from w  w  w.  ja  v  a  2s .  c o m
  int* ptr;                 //pointer to Array contents
  int size;                 //size of Array
public:
  Array(int s)              //one-argument constructor
  {
    size = s;              //argument is size of Array
    ptr = new int[s];      //make space for Array
  }
  ~Array()                  //destructor
  {
    delete[] ptr;
  }
  int& operator [] (int j)  //overloaded subscript operator
  {
    return *(ptr + j);
  }
};
int main()
{
  const int ASIZE = 10;        //size of array
  Array arr(ASIZE);            //make an array
  for (int j = 0; j<ASIZE; j++)   //fill it with squares
    arr[j] = j*j;
  for (int j = 0; j<ASIZE; j++)       //display its contents
    cout << arr[j] << ' ';
  cout << endl;
  return 0;
}

Result


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