Question

It's almost election day and the election officials need a program to help tally election results. There are two candidates for office—Polly Tichen and Ernest Orator. The program's job is to take as input the number of votes each candidate received in each voting precinct and find the total number of votes for each. The program should print out the final tally for each candidate—both the total number of votes each received and the percent of votes each received. Clearly a loop is needed. Each iteration of the loop is responsible for reading in the votes from a single precinct and updating the tallies. A skeleton of the program is in the file Election.java. Open a copy of the program in your text editor and do the following.

1.     Add the code to control the loop. You may use either a while loop or a do...while loop. The loop must be controlled by asking the user whether or not there are more precincts to report (that is, more precincts whose votes need to be added in). The user should answer with the character y or n though your program should also allow uppercase repsonses. The variable response (type String) has already been declared.

2.     Add the code to read in the votes for each candidate and find the total votes. Note that variables have already been declared for you to use. Print out the totals and the percentages after the loop.

3.     Test your program to make sure it is correctly tallying the votes and finding the percentages AND that the loop control is correct (it goes when it should and stops when it should).

4.     The election officials want more information. They want to know how many precincts each candidate carried (won). Add code to compute and print this. You need three new variables: one to count the number of precincts won by Polly, one to count the number won by Ernest, and one to count the number of ties. Test your program after adding this code.

// ***************************************************************

//   Election.java

//

//   This file contains a program that tallies the results of

//   an election.  It reads in the number of votes for each of

//   two candidates in each of several precincts.  It determines

//   the total number of votes received by each candidate, the

//   percent of votes received by each candidate, the number of

//   precincts each candidate carries, and the

//   maximum winning margin in a precinct.

// **************************************************************

import java.util.Scanner;

public class Election

{

    public static void main (String[] args)

    {

      int votesForPolly;  // number of votes for Polly in each precinct

      int votesForErnest; // number of votes for Ernest in each precinct

      int totalPolly;     // running total of votes for Polly

      int totalErnest;    // running total of votes for Ernest

      String response;    // answer (y or n) to the "more precincts" question

      Scanner scan = new Scanner(System.in);

      System.out.println ();

      System.out.println ("Election Day Vote Counting Program");

      System.out.println ();

      // Initializations

      // Loop to "process" the votes in each precinct

      // Print out the results

    }

}

Answer 1

import java.util.Scanner;

public class Election {

public static void main (String[] args)

{

// Initializations

int votesForPolly = 0; // number of votes for Polly in each precinct

int votesForErnest = 0; // number of votes for Ernest in each precinct

int totalPolly = 0; // running total of votes for Polly

int totalErnest = 0; // running total of votes for Ernest

String response; // answer (y or n) to the "more precincts" question

int winsOfPOlly = 0; // number of precints won by polly

int winsofErnest = 0; // number of precints won by ernest

int numOfTies = 0; // number of ties

System.out.println ("Election Day Vote Counting Program");

Scanner scan = new Scanner(System.in);

// Loop to "process" the votes in each precinct

do{

//input : number of votes for Polly in each precint

System.out.println("Votes for Polly in this Precint: ");

votesForPolly = scan.nextInt();

//input : number of votes for Ernest in each precint

System.out.println("Votes for Ernest in this Precint: ");

votesForErnest = scan.nextInt();

totalPolly = totalPolly+votesForPolly; // adding each precint votes of Polly to get the total votes

totalErnest = totalErnest+votesForErnest; // adding each precint votes of Ernest to get total votes

// Additional information of how many polly won, ernest won and number of ties

if(votesForPolly>votesForErnest){

winsOfPOlly +=1; //each time winsOfPOlly is incremented by 1 when polly has more votes

} else if(votesForPolly<votesForErnest){

winsofErnest+=1; //each time winsOfErnest is incremented by 1 when ernest has more votes

}else{

numOfTies+=1; // incremented by 1 when votes are equal

}

//controlled by asking the user whether or not there are more precincts to report

System.out.println("Are there more precints to report(input y for yes and n for no)?");

response = scan.next();

} while(response.equalsIgnoreCase("y")); //if y then continue the loop otherwise exit the loop

// Print out the results

// Printing total number of votes of each candidate

System.out.println ("Total votes for Polly: "+totalPolly);

System.out.println ("Total votes for Ernest: "+totalErnest);

// Printing percentage of votes of each candidate

System.out.println ("Percentage of Polly votes: "+totalPolly*100/(totalPolly+totalErnest));

System.out.println("Percentage of Ernest votes: "+totalErnest*100/(totalPolly+totalErnest));

//Printing additional information of number of wins and ties

System.out.println("Precints won by Polly: "+winsOfPOlly);

System.out.println("Precints won by Ernest: "+winsofErnest);

System.out.println("Number of ties: "+numOfTies);

}

}