Databases
StackOverflow2013
Postsdbo
POwrong result of counting
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POwrong result of counting
    primarykey
    data
    text
    <p>I'm writing a program which counts the total number of students in each class (music, art, theatre, sport). If i had 3 students, and two of them take the art class and one takes music class, the results should be: art -2 and music -1. I got a wrong result.</p> <p>comment: the music class represent by number one and art by 2.</p> <p>Results:</p> <p>Insert numbers of participants: 3 Insert student in class: 2 student in class:2 Total:1 student in class:4 Total:0 Insert student in class: 2 student in class:2 Total:3 student in class:4 Total:1 Insert student in class: 1 student in class:1 Total:1 student in class:4 Total:2</p> <p>My code:</p> <p>import java.util.Scanner; public class GroupActivity { public static void main()</p> <pre><code>{ Scanner GActivity=new Scanner(System.in); System.out.println("Insert numbers of participants:"); int participantNo= GActivity.nextInt();//Insert numbers of participants int music= 1;int art=2; int theatre= 3; int sport= 4; // Representation of each class by numbers. int countM=0; //This variable contains the number of the participants in music class. int countA=0; //This variable contains the number of the participants in art class. int countT=0; //This variable contains the number of the participants in theatre class. int countS=0; //This variable contains the number of the participants in sport class. for(int i=0;i&lt;participantNo;i++) { System.out.println("Insert student in class:"); int p= GActivity.nextInt();// // Representation of student by number. if(p==music) { countM++; System.out.println("student in class:"+music); System.out.println("Total:"+countM++); } else if(p==art) { countA++; System.out.println("student in class:"+art); System.out.println("Total:"+countA++); } else if(p==theatre) { countT++; System.out.println("student in class:"+theatre); System.out.println("Total:"+countT++); } else countS++; System.out.println("student in class:"+sport); System.out.println("Total:"+countS++); } } } </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USNizan
    1. USNizan
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COwhat are you expecting? also, when p == musix you increment countM twice.
      singulars
      1. POwrong result of counting
      1. USTaylor
    2. COI edited the code and the result
      singulars
      1. POwrong result of counting
      1. USNizan
    3. COyes and blew away the formatting other folks applied to your code and results.
      singulars
      1. POwrong result of counting
      1. USTaylor
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload