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Oct 19th, 2008

help counting choices

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hey guys, i'm really stuck on this program. It's basically a survey and I have to ask people what drinks they like. 1-4, coffee tea oj and lemonade.

i'm having trouble counting the TOTAL NUMBER OF PEOPLE and counting how many people pick coffee tea oj or lemonade.

i have the 5th option set as a sentinel, where the program ends.

i need help like i said counting the total number of people who participated(person who quits doesn't count) and counting each drink

help?

(Toggle Plain Text)

import java.util.Scanner;
public class Assignment3
{
	public static void main(String[]args)
	{
		int choice = 1;
		int person = 1;
		int person1 = 0;
		int choice1 = 1, choice2 = 1, choice3 = 1, choice4 = 1;
		int total = 0, votes;
		double percent, perc1, perc2, perc3, perc4;
		
		Scanner keyboard = new Scanner(System.in);

		
		while (choice != 5)
		{
			System.out.println("Enter choice for person# " + person);
			System.out.println("1. Coffee		2. Tea		3. Orange Juice		4. Lemonade		5. Quit");
			choice = keyboard.nextInt();
			if(choice < 1 || choice  > 5)
				{
					System.out.print("That was an invalid choice -- enter 1 through 5 only");
					choice = keyboard.nextInt();
				}
				if(choice == choice1)
					person++;
					else 
						if(choice == choice2)
							person++;
								else
									if(choice == choice3)
										person++;
											else
												if(choice == choice4)
													person++;
					
		}
		person=choice1+choice2+choice3+choice4;
		perc1 = choice1/person;
		perc2 = choice2/person;
		perc3 = choice3/person;
		perc4 = choice4/person; 
			
			
		System.out.println("The total number of people surveyed: " + person);
		System.out.println("THe results are as follows");
		System.out.println();
		
		System.out.println(" Beverage				Number of Votes			Percentage");
		System.out.println("-------------------------------------------------------------------------------------");
		System.out.println();
		System.out.println("Coffee                	"+choice1+ "			    "+perc1);
		System.out.println("Tea								"+choice2+"					 "+perc2);
		System.out.println("Orange Juice 				"+choice3+"					 "+perc3);
		System.out.println("Lemonade						"+choice4+"					 "+perc4);
		
	}
}

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nitric0

Reputation Points: 10

Solved Threads: 0

Newbie Poster

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2 posts
since Sep 2008

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Oct 19th, 2008

Re: help counting choices

Try this:
have a variable for each drink (you can have an array as well, if you want) and proceed as follows:
- when a new person comes, increment the person variable
- read their choice
- if choice = 1, increment the variable for tea, if choice = 2, inc. variable for coffee etc
- at the end, you will know that:
- you have asked 'person' persons
- teaVariable of them prefer tea
- coffeeVariable of them prefer coffee
- etc.

hope this helps.

Last edited by Chaster; Oct 19th, 2008 at 8:43 am.

Chaster

Reputation Points: 12

Solved Threads: 3

Junior Poster in Training

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68 posts
since Jun 2007

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Oct 20th, 2008

Re: help counting choices

You seem to be making things a little hard. Zero things out to start with, then if their choice is valid increment person, then record their choice, then do your calculations. Also remove your line of

Java Syntax (Toggle Plain Text)

person = choice1+ .... etc

here's the gist of what you need

Java Syntax (Toggle Plain Text)
int choice1 = 0, choice2 = 0, choice3 = 0, choice4 = 0, person = 0;
 
//Leave original code here
 
if(choice < 1 || choice  > 5) {
 System.out.print("That was an invalid choice -- enter 1 through 5 only");
choice = keyboard.nextInt();
}
//You can add this and make it easier
else {
//We added a new preson
person++;
//Now we'll add their choice
switch(choice){
case  1:
choice1++;
break;
case 2:
choice2++;
break;
//continue on with others
}
int choice1 = 0, choice2 = 0, choice3 = 0, choice4 = 0, person = 0;

//Leave original code here

if(choice < 1 || choice  > 5) {
 System.out.print("That was an invalid choice -- enter 1 through 5 only");
choice = keyboard.nextInt();
}
//You can add this and make it easier
else {
//We added a new preson
person++;
//Now we'll add their choice
switch(choice){
case  1:
choice1++;
break;
case 2:
choice2++;
break;
//continue on with others
}

dickersonka

Reputation Points: 133

Solved Threads: 141

Veteran Poster

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1,162 posts
since Aug 2008

Permalink

Oct 20th, 2008

Re: help counting choices

java Syntax (Toggle Plain Text)
 
// ...
 
		System.out.println(" Beverage				Number of Votes			Percentage");
		System.out.println("-------------------------------------------------------------------------------------");
		System.out.println();
		System.out.println("Coffee                	"+choice1+ "			    "+perc1);
		System.out.println("Tea								"+choice2+"					 "+perc2);
		System.out.println("Orange Juice 				"+choice3+"					 "+perc3);
		System.out.println("Lemonade						"+choice4+"					 "+perc4);
// ...

		System.out.println(" Beverage				Number of Votes			Percentage");
		System.out.println("-------------------------------------------------------------------------------------");
		System.out.println();
		System.out.println("Coffee                	"+choice1+ "			    "+perc1);
		System.out.println("Tea								"+choice2+"					 "+perc2);
		System.out.println("Orange Juice 				"+choice3+"					 "+perc3);
		System.out.println("Lemonade						"+choice4+"					 "+perc4);

Use tabs instead of trying to space things out and match them up manually =/

Alex Edwards

Reputation Points: 392

Solved Threads: 108

Posting Shark

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971 posts
since Jun 2008

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