Question

15.1: Tallying Votes

• Elections are a formal group-decision making process by which a population chooses a person to hold office, such as the mayor of a city.
• Another use of elections is to accept or reject a political proposition.
• Most election results are tallied, or counted, using electronic voting.
• Most electronic voting machines use a computer to take care of the chore of casting and counting votes.
• This Tuesday, November 6 (the date your assignment is due) is election day.
• In this assignment we will develop a program to count votes.
• The user enters votes based on a simple menu that presents the candidates.
• The user then inputs a single character (upper or lowercase A-C) to choose their candidate from the menu.
• Entering an 'X' (without the quotes) will exit the tallying operation and present a summary of the votes.
• Name the source code file Vote.java.
• Present a list of candidates to the user and allow her to enter a single character as input, and no other input, as shown in the Example Output.
• Feel free to chose any candidate names you like for the voters to select. You do not have to use the 3 candidates from my example output.
• Use an indefinite loop to allow multiple users to vote on your voting machine.
• After all the votes are entered and the user enters an 'X', exit the loop and report the vote count by candidate names and neatly aligned as shown in the Example Run.
• Your program should also report an error message if the user enters a letter other than A-C or X, as shown below.
• Please use proper style as demonstrated in class
• When your program works identically to the example output below, submit it to Canvas.

Example Output:

***Voting Machine!***

Candidate A: Dalai Lama
Candidate B: Bernie Sanders
Candidate C: The Black Panther

Enter your choice (A-C) or X to exit: C
You chose candidate The Black Panther

Candidate A: Dalai Lama
Candidate B: Bernie Sanders
Candidate C: The Black Panther

Enter your choice (A-C) or X to exit: c
You chose candidate The Black Panther

Candidate A: Dalai Lama
Candidate B: Bernie Sanders
Candidate C: The Black Panther

Enter your choice (A-C) or X to exit: Z
Invalid input. Please enter A-C or X

Candidate A: Dalai Lama
Candidate B: Bernie Sanders
Candidate C: The Black Panther

Enter your choice (A-C) or X to exit: A
You chose candidate Dalai Lama

Candidate A: Dalai Lama
Candidate B: Bernie Sanders
Candidate C: The Black Panther

Enter your choice (A-C) or X to exit: B
You chose candidate Bernie Sanders

Candidate A: Dalai Lama
Candidate B: Bernie Sanders
Candidate C: The Black Panther

Enter your choice (A-C) or X to exit: a
You chose candidate Dalai Lama

Candidate A: Dalai Lama
Candidate B: Bernie Sanders
Candidate C: The Black Panther

Enter your choice (A-C) or X to exit: B
You chose candidate Bernie Sanders

Candidate A: Dalai Lama
Candidate B: Bernie Sanders
Candidate C: The Black Panther

Enter your choice (A-C) or X to exit: C
You chose candidate The Black Panther

Candidate A: Dalai Lama
Candidate B: Bernie Sanders
Candidate C: The Black Panther

Enter your choice (A-C) or X to exit: X

***Election Results!***
Dalai Lama: 2
Bernie Sanders: 2
The Black Panther: 3

Answer 1

Source Code in Java:

import java.util.*; //importing util package to use Scanner class for inputs
class Vote
{
public static void main(String args[]) //main function
{
Scanner sc=new Scanner(System.in); //creating object of Scanner class to use for inputs
System.out.println("***Voting Machine!***");
System.out.println();
String candidates[]={"CM Punk","Seth Rollins","Johnny Gargano"}; //storing candidate names in an array
int votes[]={0,0,0}; //using array to store vote for each candidate
char ch;
while(true)
{
//printing vote choices
System.out.println("Candidate A: "+candidates[0]);
System.out.println("Candidate B: "+candidates[1]);
System.out.println("Candidate C: "+candidates[2]);
System.out.println();
//asking for vote
System.out.print("Enter your choice (A-C) or X to exit: ");
ch=sc.next().charAt(0);
//tallying vote using if-else
if(ch=='A' || ch=='a')
{
System.out.println("You chose candidate "+candidates[0]);
votes[0]++;
System.out.println();
}
else if(ch=='B' || ch=='b')
{
System.out.println("You chose candidate "+candidates[1]);
votes[1]++;
System.out.println();
}
else if(ch=='C' || ch=='c')
{
System.out.println("You chose candidate "+candidates[2]);
votes[2]++;
System.out.println();
}
else if(ch=='X' || ch=='x')
{
System.out.println();
break;
}
else
{
System.out.println("Error! Invalid choice!");
System.out.println();
}
}
//publishing the result
System.out.println("***Election Results!***");
System.out.println(candidates[0]+": "+votes[0]);
System.out.println(candidates[1]+": "+votes[1]);
System.out.println(candidates[2]+": "+votes[2]);
}
}

Output: