/* This program creates a vector of size n, and compute */
/* the sum of the vector. n is inputed by the user      */

#include <iostream>
using namespace std;

int main( )
{int n, i;
 double *p;
 cout << "Please enter the size of the vector: "<<endl;
 cin >> n;

 p = new double[n]; // dynamically allocate array
 cout << "Input the values for the vector with size " << n <<endl;
 
 for(i=0; i<n; i++)
  {   cin >> p[i];
  }

 // compute the sum of the vector
 double sum = 0.0;
 for(i=0; i<n; i++)
  { sum = sum + p[i];
  }

 cout << "the sum of the vector is: " << sum << endl;

 // return the memory to the heap
 delete [] p; 
 
 return 0;

}