'''
Program allows the user to input the beginning balance and the amount to be contributed at the end of 
each year. Displays the amount of money at the end of each year and at the end of the 10 years using 
interest rate of 4% compounded annually.

Inputs:
begBalance = beginning balance
annualAmount = annual amount to be contributed at the end of the years

Constants:
intRate = 4%
numYears = 10

Outputs:
endBalance = Balance at the end of the year

Calculation Strategy:
Iterate over numYears. Display endBalance for each iteration and accumulate accBalance 
over numYears, display accBalance at the end of the loop.

'''
try:
    # Inputs
    begBalance = float(input("Enter beginning balance: "))
    annualAmount = float(input("Enter amount to be contributed at the end of each year: "))
    
    # Constants
    numYears = 10
    intRate = 0.04

    # for loop
    endBalance = begBalance
    
    # Calculations
    print("{0:8}{1:12}".format("Year", "Ending Balance"))
    for year in range(1, numYears+1):
        endBalance = endBalance * (1+intRate) + annualAmount
        print("{0:<10}{1:^12.2f}".format(year, endBalance))
    print("Balance at the end of 10 years: {0:8.2f}".format(endBalance))
except:
    print("Invalid entries, enter numeric values only")