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Thread: 2 questions about making bar chart using asteriks

  1. #1
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    Default 2 questions about making bar chart using asteriks

    import java.util.Scanner; //import scanner statement
     
    public class BarChartProgram
    {
    	public static void main(String [] args)
    	{
    		Scanner keyboard = new Scanner (System.in); //scanner object
    		int store1Sales;                            //number of store1 sales
          int store2Sales;                            //number of store2 sales
          int store3Sales;                            //number of store 3 sales
          int cols1;                                  //Asterisks line 1      
          int cols2;                                  //Asterisks line 2 
          int cols3;                                  //Asterisks line 3
     
          //Prompt store1 sales number
          System.out.print("Enter today's sales for store 1: ");  
          store1Sales = keyboard.nextInt();
          while (store1Sales < 0) //while statement if prompt number is less than 0
          {  
             System.out.print("Invalid input - enter a value of zero or greater: ");
             store1Sales = keyboard.nextInt();
          }
     
          //Prompt store2 sales number
          System.out.print("Enter today's sales for store 2: ");
          store2Sales = keyboard.nextInt();
          while (store2Sales < 0) //while statement if prompt number is less than 0
          {  
             System.out.print("Invalid input - enter a value of zero or greater: ");
             store2Sales = keyboard.nextInt();
          }
     
          //Prompt store3 sales number
          System.out.print("Enter today's sales for store 3: ");
          store3Sales = keyboard.nextInt();
          while (store3Sales < 0) //while statement if prompt number is less than 0
          {  
             System.out.print("Invalid input - enter a value of zero or greater: ");
             store3Sales = keyboard.nextInt();
          }
          System.out.println("");
          System.out.println("SALES BAR CHART\n");
     
     
          //Print out store1 sales number in asteriks
          System.out.print("Store 1: ");
          for (cols1 = 1; cols1 <= store1Sales; ++cols1)
          {
             System.out.print("*");
          }
          System.out.println("");
     
     
          //Print out store2 sales number in asteriks
          System.out.print("Store 2: ");
          for (cols2 = 1; cols2 <= store2Sales; ++cols2)
          {
             System.out.print("*");
          }     
          System.out.println("");
     
     
          //Print out store3 sales number in asteriks
          System.out.print("Store 3: ");
          for (cols3 = 1; cols3 <= store3Sales; ++cols3)
          {
             System.out.print("*");
          }
       }
    }

    Edit: I figured out 1st question.


    2nd question
    How do I make it so replace every tenth asteriks with "X"?
    for example, if i enter 15 for store1 sales, it shows like

    Store1: *********X*****

    I've been on this for a while but just can't figure it out.

    this is example of print out result

    Enter today's sales for store 1: 9
    Enter today's sales for store 2: -2
    Invalid input - enter a value of zero or greater: -1
    Invalid input - enter a value of zero or greater: 23
    Enter today's sales for store 3: 16

    SALES BAR CHART

    Store 1: *********
    Store 2: *********x*********x***
    Store 3: *********x******

    and currently mine would print it out like

    SALES BAR CHART

    Store 1: *********
    Store 2: ***********************
    Store 3: ****************


  2. #2
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    Default Re: 2 questions about making bar chart using asteriks

    Use an if statement with the remainder (or modulus) operator in your for loop.

    pseudocode:

    if ( cols % 10 == 0 )
    print ( "X" )
    else
    print ( "*" )

    You may have to do some special magic for cols = 0, but you can figure that out.

  3. #3
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    Default Re: 2 questions about making bar chart using asteriks

    oh.. that worked. thx a lot.

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