How to get 10 values per line in output?

[newgal]

I have been stuck on an assignment; hopefully you can help me out.
I have posted the code below; basically I need to output n into rows of 10 answers per line.
I cannot use arrays! I am able to output the answers into a continuous row, but cannot seem to break it into the requirement above.

class PrimeFinder {
    public static void main(String[] args) {
        Boolean prime;
        for (int n = 2; n < 100; n++) {
            prime = true;
            /** screening out even numbers, since it's multiple of 2 */
            if ((n % 2) == 0)
                prime = false;
            /** screening for odd numbers to find Prime */
            else {
                for (int x = 3; x <= (n / 2); x+=2) {
                    if ((n % x) == 0) {
                        prime = false;
                        break;
                    }
                }
            }
            if (prime)
                System.out.print(n + " ");
            else
                continue;
        }
    }
}

~newgal

[BigDaddyLH]

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[BigDaddyLH]

Introduce an int variable whose value is the number of primes printed in the current row. When it reaches 10, reset it to 0 and:

System.out.println();

[newgal]

Introduce an int variable whose value is the number of primes printed in the current row. When it reaches 10, reset it to 0 and:

System.out.println();

How do I do that? Where should I insert the int variable?
Sorry I am really lost on this one.

[BigDaddyLH]

How do I do that? Where should I insert the int variable?
Sorry I am really lost on this one.

You have only written on method (main), so there doesn't seem to be many places to define the variable. As an exercise, can you write a little program that produces this output using a single loop and using my suggestion?

[HTML]
.
0 1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29
30 31 32 33 34 35 36 37 38 39
40 41 42 43 44 45 46 47 48 49
50 51 52 53 54 55 56 57 58 59
60 61 62 63 64 65 66 67 68 69
70 71 72 73 74 75 76 77 78 79
80 81 82 83 84 85 86 87 88 89
90 91 92 93 94 95 96 97 98 99
[/HTML]

If you can do that, you'll understand how to add this feature to your prime program.

[Laharl]

Create the int value outside the function (set it to 0), and every time you print (or locate, up to you) a prime, increment it. Once you hit 10, reset the int to 0 and use System.out.println(); to print a newline character.

[newgal]

If you can do that, you'll understand how to add this feature to your prime program.

OK, I've been thinking about this program and I can write it out and it output, but again, I can only output it continuously.
I understand the concept that I need to count the output of prime to 10, then reset, but I am not sure how to do it. (Sorry this is my first programming class and I'm struggling :(
Do I use for loops to do it? I tried that route, didn't work!

~newgal

[BigDaddyLH]

OK, I've been thinking about this program and I can write it out and it output, but again, I can only output it continuously.
I understand the concept that I need to count the output of prime to 10, then reset, but I am not sure how to do it. (Sorry this is my first programming class and I'm struggling :(
Do I use for loops to do it? I tried that route, didn't work!

~newgal

Here's a skeleton solution. Use count to decide when to start a new line.

public class Example {
    public static void main(String[] args) {
        int count = 0;
        for(int i=0; i<100; ++i) {
            System.out.print(i + " ");
 
            if (*expression*) {
                System.out.println();
 
            }
        }
    }
}

[newgal]

Oh! I get it now....thanks so much. Now both my program works and so did the little one.

[BigDaddyLH]

Cheers! Good luck on the next one.