Thread: 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: ****************

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.

oh.. that worked. thx a lot.