Hi,
I have an assignment that is somewhat similar to the last guys:
Write a class that will predict the size of a population of organisms. The class should store the starting # of ogranisms, their average daily population increase(as a percentage), and the number of days they will multiply. The class should have amethod that uses a loop to display the size of the population for each day.
Test the class in a program that asks the user for the starting size of teh pop., thier avg daily increase, the # of days they will multiply. The program should display the daily pop.
Input validation: do not accept a number < 2 for the starting size of the pop. do not accept a negative number for avg daily pop increase. Do not accept a # less than one for the # of days they will multiply.
This is what i have thus far
import java.util.Scanner;
public class Population1
{
public static void main(String[] a)
{
int startPop; //store the population
int avgIncrease; //store the average daily population
int days; //store the number of days they will multiply
String input; //Store data from keyboard
char YN; //Holds data for yes or no
int total;
//Create Scanner object to for keybrd input
Scanner kb = new Scanner(System.in);
Population P = new Population();
do{
//Get the number of organisms
System.out.print("\nEnter the number of organisms: ");
startPop = kb.nextInt();
//Get the number for daily increase
System.out.print("Enter a number for the average daily growth: ");
avgIncrease = kb.nextInt();
avgIncrease = avgIncrease / 100;
//Get the number of days for multiplying
System.out.print("Enter # of days for multiplying: ");
days = kb.nextInt();
}
while(startPop >= 2 || avgIncrease > 0 || days >=1);
{
//Does the user want to re-enter data?
System.out.println("Note:\n(1)Enter ONLY positive numbers.\n" +"(2)Initial"
+ " populaton must be greater than 2. \n" + "(3)"
+ "Number of days must be greater than 1.");
System.out.println("Would you like to enter numbers again? ");
System.out.print("Enter Y for yes or N for no: ");
input = kb.next();
YN = input.charAt(0);
}
}
}
5
