Starting Out with C++: Early Objects (9th Edition)
9th Edition
ISBN: 9780134400242
Author: Tony Gaddis, Judy Walters, Godfrey Muganda
Publisher: PEARSON
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Chapter 6, Problem 17PC
Population
In a population, the birth rate is the percentage increase of the population due to births, and the death rate is the percentage decrease of the population due to deaths. Write a program that asks for the following:
- The starting size of a population (minimum 2)
- The annual birth rate
- The annual death rate
- The number of years to display (minimum 1)
The program should then display the starting population and the projected population at the end of each year. It should use a function that calculates and returns the projected new size of the population after a year. The formula is
- N is the new population size,
- P is the previous population size,
- B is the birth rate,
- and D is the death rate.
Annual birth rate and death rate are the typical number of births and deaths in a year per 1,000 people, expressed as a decimal. So, for example, if there are normally about 32 births and 26 deaths per 1,000 people in a given population, the birth rate would be .032 and the death rate would be .026.
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Chapter 6 Solutions
Starting Out with C++: Early Objects (9th Edition)
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