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Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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I'm having a hard time with these questions. Especially since the reading we are given in class doesn't really go over this.

A local biologist needs a program to predict population growth. The inputs would be:

The initial number of organisms, as an int
The rate of growth (a real number greater than 1), as a float
The number of hours it takes to achieve this rate, as an int
A number of hours during which the population grows, as an int

For example, one might start with a population of 500 organisms, a growth rate of 2, and a growth period to achieve this rate of 6 hours. Assuming that none of the organisms die, this would imply that this population would double in size every 6 hours. Thus, after allowing 6 hours for growth, we would have 1000 organisms, and after 12 hours, we would have 2000 organisms.

Write a program that takes these inputs and displays a prediction of the total population.

An example of the program input and output is shown below:

Enter the initial number of organisms: 10

Enter the rate of growth [a real number > 1]: 2

Enter the number of hours to achieve the rate of growth: 2

Enter the total hours of growth: 6 The total population is 80

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