Population Projection

# -*- coding: utf-8 -*-
"""
Created on Sat Sep  8 15:24:04 2018

Problem 1.11

For the program below, please see the following abbreviations I have used for 
ease of use:
    
p = population
y = days in the year
b = births
d = deaths
i = immigrants
"""

#Inputs
p = 312032486
y = 365
b = 7
d = 13
i = 45

#Births in a day
bd = (86400 // b)
#Deaths in a day
dd = (86400 // d)
#Immigrants in a day
id = (86400 // i)

#Calculation for Population in 1 year
year1 = p + ((bd*y) - (dd*y) + (id*y))
#Calculation for Population in 2 years
year2 = year1 + ((bd*y) - (dd*y) + (id*y))
#Calculation for Population in 3 years
year3 = year2 + ((bd*y) - (dd*y) + (id*y))
#Calculation for Population in 4 years
year4 = year3 + ((bd*y) - (dd*y) + (id*y))
#Calculation for Population in 5 years
year5 = year4 + ((bd*y) - (dd*y) + (id*y))



print('The population numbers for the next 5 years based on the inputs used will be the following:')
print('End of year 1: ', year1)
print('End of year 2: ', year2)
print('End of year 3: ', year3)
print('End of year 4: ', year4)
print('End of year 5: ', year5)