Dynamic Memory Allocation in C++ Part – 1

Program 1

// Dynamic memory allocation in C++
#include<iostream>
using namespace std;
int main()
{
     system("cls");
     int *ar,n,sum=0;
     cout<<"Enter the limit: "<<endl;
     cin>>n;   
      ar=new int[n];   /// allocation of dynamic memory
     cout<<"Enter elements in array: "<<endl;
     for(int i=0;i<n;i++)
     {
        cin>>ar[i];
     }
     for(int i=0;i<n;i++)
     {
        cout<<ar[i]<<endl;
        sum=sum+ar[i];
     }
     cout<<"sum of elements : "<<sum;
      delete ar; /// deallocation of dynamic memory
    cout<<"------------------------------------";

     return 0;
}