/***************************************************
Compound Interest (Version 2)

Write a program that reads an annual interest rate
from the user, and computes the ammount of money
you'd have after 10 years at that interest rate,
if you made $100.00 payments into the account at
the beginning of each year.  This version uses only
a single variable for the amount in the account,
and keeps changing its value at each compounding
step.

The formula for interest is this:  If T is the
amount of money in your account at the beginning of
the year, and r is the annual interest rate, the 
amount in your account at the end of the year is:

        T*(1.0 + r/100.0)

***************************************************/
#include <iostream>
using namespace std;

int main()
{
  // Read interest rate
  double r;
  cout << "Enter interest rate: ";
  cin >> r;

  // Compute 10 compounding steps
  double T;
  T = 100.0*(1.0 + r/100.0);
  T = (T + 100.0)*(1.0 + r/100.0);
  T = (T + 100.0)*(1.0 + r/100.0);
  T = (T + 100.0)*(1.0 + r/100.0);
  T = (T + 100.0)*(1.0 + r/100.0);
  T = (T + 100.0)*(1.0 + r/100.0);
  T = (T + 100.0)*(1.0 + r/100.0);
  T = (T + 100.0)*(1.0 + r/100.0);
  T = (T + 100.0)*(1.0 + r/100.0);
  T = (T + 100.0)*(1.0 + r/100.0);
  
  // Write out results
  cout << "Final amount is: "
       << T << " dollars" << endl;
  
  return 0;
}