Programming Assignment #66

Code

/// Name: Dylan Sleeper
/// Period: 6
/// Program Name: Do While Swimming
/// File Name: DoWhileSwimming.java
/// Date Finished: 1/5/2016

//They swim for the same amount of time.
//They both swim for less time and Goofus swims for a longer period of time.
//Gallant checks it first
//He dives in first.
//A do while loop always runs what's in the loop at least once however a while loop checks the conditional at the start of every loop so when it comes to it at first, if the conditional isn't true, it will just skip the code inside.
//Pre-test is while and post-test is do-while.

import java.util.Scanner;

public class DoWhileSwimming
{
    public static void main( String[] args ) throws Exception
    {
        Scanner keyboard = new Scanner(System.in);

        String swimmer1 = "GALLANT";
        String swimmer2 = "GOOFUS ";

        double minimumTemperature = 79.0; // degrees Fahrenheit
        double currentTemperature;
        double savedTemperature;
        int swimTime;

        System.out.print("What is the current water temperature? ");
        currentTemperature = keyboard.nextDouble();
        savedTemperature = currentTemperature; // saves a copy of this value so we can get it back later.

        System.out.println( "\nOkay, so the current water temperature is " + currentTemperature + "F." );
        System.out.println( swimmer1 + " approaches the lake...." );

        swimTime = 0;
        while ( currentTemperature >= minimumTemperature )
        {
            System.out.print( "\t" + swimmer1 + " swims for a bit." );
            swimTime++;
            System.out.println( " Swim time: " + swimTime + " min." );
            Thread.sleep(600); // pauses for 600 milliseconds
            currentTemperature -= 0.5; // subtracts 1/2 a degree from the water temperature
            System.out.println( "\tThe current water temperature is now " + currentTemperature + "F." );
        }

        System.out.println( swimmer1 + " stops swimming. Total swim time: " + swimTime + " min." );

        currentTemperature = savedTemperature; // restores original water temperature

        System.out.println( "\nOkay, so the current water temperature is " + currentTemperature + "F." );
        System.out.println( swimmer2 + " approaches the lake...." );

        swimTime = 0;
        do
        {
            System.out.print( "\t" + swimmer2 + " swims for a bit." );
            swimTime++;
            System.out.println( " Swim time: " + swimTime + " min." );
            Thread.sleep(600);
            currentTemperature -= 0.5;
            System.out.println( "\tThe current water temperature is now " + currentTemperature + "F." );

        } while ( currentTemperature >= minimumTemperature );

        System.out.println( swimmer2 + " stops swimming. Total swim time: " + swimTime + " min." );
    }
}

  

Outputs

Assignment 15