Hello,
I am having difficulties understanding a loop example. Please look at the code below. I understand how the nested 'for' loop does not execute in the beginning because its conditional statement is "false" and therefore the first value of 'i,' which is 2, is output. What I dont understand is whether 'j' is iterated even though the conditional expression is false and cancels the entire loop, or does the conditional statement being false only affect the nested if statement and still maintains ++j alive to iterate to the next integer value? If 'j' is not iterated, then how is the conditional statement, i < j, of the nested for loop ever deemed "true" to not permit i as a prime when 'i' reaches the value of 4? I might be thinking this too far. Please help. Thank you.

Here is the code:

public class Primes2 {
public static void main(String[] args){
int nValues = 50;
int j;

Outerloop:
for(int i = 2; i <= nValues; ++i){

for(j = 2; j < i; ++j){
if(i % j == 0){
continue Outerloop;
}
}
System.out.println(i);
}

}
}

ok so it turns out that I had messed up with the equality operator. < is less than, which would make sense. What I am having difficulty with then is when does j iterate?

p0stalDude3,
To assist with your problem, more information is needed: The definition of a prime number is not in your solution algorithm or your coding. A prime number is a number greater than 0 that is divisible by 1 and itself, such as 1,2, 3, 5, 7, 11, 13, 17,19, etc. In your code you are not testing for prime numbers. It is not clear from your code as to what to do with the prime number when you find it, that is to say do you display the prime, build a list (data structure), or place the prime number into a data structure like an array. Instead of stacking you for loop, first lay it out, step by step first. Hint: I would use the While-repetition control (While nValues <50, because the incrementing the loop is at the bottom of the loop and not at the top of the loop .

Hope ths helps.

__________________
Disclaimer: The above comments are solely the opinion of one person and not to be construed as a directive or an incentive to commit fraudulent acts.

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