Полином

#include <iostream>
using std::cin;
using std::cout;
 
typedef struct _TPolynom
{   int n;
    double *coef;
}   TPolynom;
 
TPolynom *CreatePolynom (int _n)
{   TPolynom *polynom = new TPolynom;
    polynom->coef = new double [_n+1];
    polynom->n = _n;
    for (int i = 0; i< _n+1; i++)
        polynom->coef[i] = 0.;
    return polynom;
}
 
void DeletePolynom (TPolynom *polynom)
{   delete [] polynom->coef;
    delete polynom;
}
 
void SetPolynom (TPolynom *polynom, double *_coef)
{   for (int i = 0; i< polynom->n + 1; i++)
        polynom->coef[i] = _coef[i];
}   
 
void Print (TPolynom *polynom)
{   for (int i = polynom->n; i>0; i--)
        cout << polynom->coef [i] << " * X^" << i << " + ";
    cout << polynom->coef [0] <<"\n";
}
 
double GetValue (TPolynom *polynom, double x)
{   double value = polynom->coef[0], power = x;
    for (int i = 1; i< polynom->n + 1; i++)
    {   value += polynom->coef[i] * power;
        power *= x;
    }
    return value;
}
 
int main()
{   int n;
    double x;
    cout << "n = ";
    cin >> n;
    TPolynom *poly = CreatePolynom (n);
    double *arr = new double [n+1];
 
    cout << "\nEnter coefficients from bigger powers to smaller:\n\t";
    for (int i = n; i > -1; i--)
        cin >> arr[i];
 
    SetPolynom (poly, arr);
    Print (poly);
 
    cout << "\nX = ";
    cin >> x;
    cout << GetValue (poly, x);
 
    DeletePolynom (poly);
    delete [] arr;
    cin.sync(); cin.get();
    return 0;
}