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help counting choices
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Join Date: Sep 2008
Posts: 2
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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?
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?
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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Join Date: Jun 2007
Posts: 59
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Solved Threads: 3
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.
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.
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Join Date: Aug 2008
Posts: 1,160
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Solved Threads: 137
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
here's the gist of what you need
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 }
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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);
Use tabs instead of trying to space things out and match them up manually =/
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