Dynamic Array (Example)

#include <iostream>

using namespace std;

int main()

{

                int* arr=NULL;

                int size;

                cout<<"How many number u want?";

                cin>>size;

                int sum=0;

                arr=new int[size];

                for(int i=0;i<size;i++)

                {

                                cout<<"Enter number :";

                                cin>>arr[i];

                }

                for(i=0;i<size;i++)

                {

                                sum=sum+arr[i];

                }

                cout<<sum;       

                return 0;

}