Вычислить сумму ряда и сделать графическую интерпретацию результата

#include <iostream>
#include <math.h>
using namespace std;
 
 int main() {
double x; 
double E,sum=0;
cin>>x;
cin>>E;
for (int i=1;i<E;i++) 
 {
  sum=pow(x,i)/i;
 }
cout<<sum;
    system("pause");
    return 0;
}

void __fastcall TForm1::N4Click(TObject *Sender)
{
        a = StrToFloat(Edit1->Text);
        b = StrToFloat(Edit2->Text);
        c = StrToFloat(Edit3->Text);
        p = StrToFloat(Edit4->Text);
        k = StrToFloat(Edit5->Text);
        Series1->Clear();
        for (x = p; x <= k; x = x + 0.1){
                y = a* cos(b*x-c)+sin(c*x+a);
                Series1->AddXY(x,y);
        }
        Chart1->Refresh();
        Chart1->LeftAxis->Increment = (Chart1->LeftAxis->Maximum- Chart1->LeftAxis->Minimum)/5;
}

  int n = 100, count = 12, count2 = 0, a = Image1->Width, b = Image1->Height, w = a*2/3/count;
  long double x = 1.14, sum = 0, temp, value = 1.1, max = sum;
 
  for (double j = x; j > value; j -= fabs(x - value)/count)
  {
    sum = 0;
    temp = 1;
    count2++;
 
    for (int i = 1; i <= n; i++)
    {
      temp *= j;
      sum += temp / i;
    }
 
    if (sum > max)
      max = sum;
 
    Image1->Canvas->Brush->Color = TColor(clRed+rand());
    Image1->Canvas->Rectangle(a-w*3/2*count2+w, b, a-w*3/2*count2, b-sum/max*b+20);
    Image1->Canvas->Brush->Color = clWhite;
    Image1->Canvas->TextOutW(a-w*3/2*count2, Min(int(b-sum/max*b+5), b-15), FloatToStr(RoundTo(sum, -3)));  // #include <System.Math.hpp>
    Canvas->TextOutW(a-w*3/2*count2+w/2-5, b+Image1->Top, FloatToStr(RoundTo(j, -3)));
 
//  ShowMessage("x = " + FloatToStr(j) + "\nsum = " + FloatToStr(sum));
  }