/* Practical 6 Solution
    Investment Table */

/* This program declares variables just before first use
  rather than at the start of the program. Either way is 
  OK. I just wanted you to see this alternative. */

#include <iostream>
#include <iomanip> //for io manipulation//
#include <cmath> //for the pow function//


using namespace std;

int main() {
    const double RATE_MIN = 5;
    const double RATE_MAX = 10;
    const double RATE_INCR = 0.5;
    const int YEAR_MIN = 5;
    const int YEAR_MAX = 30;
    const int YEAR_INCR = 5;
    
    /* print table heaer */
    int year;
    cout << "Rate   ";
    for (year = YEAR_MIN; year <= YEAR_MAX; 
            year = year + YEAR_INCR)
     {
        cout << setw(2) << year << " years  " ;
     }
     cout << "\n";
     
     cout << fixed << setprecision (2);
     double rate;
     double initial_balance = 1000;
     for (rate = RATE_MIN; rate <= RATE_MAX; 
            rate = rate + RATE_INCR)
       {
       /* print table row */
       cout << setw(5) << rate;
       for (year = YEAR_MIN; year <= YEAR_MAX; 
            year = year + YEAR_INCR)
        {
            double balance = initial_balance *
                        pow (1 + rate/100, year);
            cout << setw(10) << balance;
        }
        cout << "\n";
     }
    
    return 0;
}