Random coin flip application

[Boomer1]

Application for 10 random coin flips. At the end of the application I just want to display the percentage of the heads flipped and percentage of tails flipped. Can someone point me in a right direction please?

//import statements
import java.util.*;

public class FlipCoin
{
	public static void main(String [] args)
	{
		//declare variables
	   double flip;
		int count = 0;
		int countHeads = 0;
		int countTails = 0;
		int percentHeads;
		int percentTails;
		
		
		//Loop
		for(int x = 0; x <= 10;x = x++)
		{
			x = x + 1;
		   //flip
		   flip = Math.random();
			//if statement
		   if( flip <= .5)
			{	
				flip = countHeads;
		    	countHeads = countHeads + 1;
				percentHeads = countHeads * 10;
				}
			else
			{			
				flip = countTails;
		      countTails = countTails + 1;
				percentTails = countTails * 10;
				System.out.println("Heads was flipped " + percentHeads + " percent of the time.");
				System.out.println("Tails was flipped " + percentTails + " percent of the time.");

		   
			}
		   
			count = count +1;
			
						
					
    	}//End Loop
		
		
}//End Main
}//End Class

[Addez]

if you wana do this:
x = x + 1;
then do it like this instead:
x += 1;
or even better
x++;
It looks cleaner and do the same, But in this case, You shouldnt do this!
In your for loop you got at the end "x++"
This meens, it will increese the value of x with one everytime it has done one loop.
So erase the whole x = x+1; thingy.

And for the random your right now taking a random value with random amount of numbers.
Do this:
flip = Math.random(1); /this will give you a value between 0 and 1
then ask if flip is < 0.5

hope this helped

[Addez]

oh and put this:

System.out.println("Heads was flipped " + percentHeads + " percent of the time.");
				System.out.println("Tails was flipped " + percentTails + " percent of the time.")

ourside the for loop

[Fubarable]

If you want to print something out after the loop is done, then you'll want to have your println statements after the loop closes -- after your //End Loop comment.

Also, you'll likely want to give your percent variables some initial value such as 0. Also, when calculating percent, you'll first calculate frequency which will be a floating point type value (double would work best here) and then change it to percent by mult by 100 and casting to int. One pitfall -- when you calculate the frequency, be sure you cast one of the numbers used in this equation (usually I use the numerator) to double when you divide. Otherwise you'll be doing int division: an int / int will return an int always -- and you don't want to do this. For instance 1/ 2 returns 0 (that's the double result rounded down to an int), but (double)1/2 returns 0.5.

Edit: also please learn to use code tags as it makes your code much easier to read. I added them to your original post, but you should be doing this yourself. Please see my signature below to learn how to do this.

[Boomer1]

I see exactly what both of you were talking about. I will certainly learn to use code tags. Thanks for all your help, I appreciate it.

[Boomer1]

One more quick question, sorry...but how would I get the result to stop printing 20 times. What would I do if I wanted to just print the percentages of heads and tails?

Thank you

[Fubarable]

Did you take our advice? Is your call to System.out.println inside the for loop or outside of it?

[Boomer1]

It is outside it???

[Boomer1]

wow, yeah...i copy and pasted but didnt remove the first set. Yep, you are definitely right.

Thank you!