Question

I’m taking a Pre-AP Comp Sci class and figured I join the club and when doing some practice problems online, I stumbled on this question:

Write a program that will print out every number within the range 500 to 1000 that is divisible by 7. You will need to use mod (%) for this problem.”

I was able to get all other similar problems solved with little or no issue but this one I can’t seem to get. I’m thinking the issue would would be in my for loop at the x % 7 part.
Here’s what I’ve gotten as far as code:

class javaRunner {
    public static void main(String[] args) {
        for(int x = 500; x <= 1000; x % 7) {
            System.out.println(x);
        }
    }
}

`

Answer 1

The general form of the for statement can be expressed as follows:

for (initialization; termination; increment/decrement) {
    statement(s)
}

x%7 doesn’t make any change on x. Correct way to do this would be,

for(int x=500; x<=1000; x++)
{
    if(x%7==0)
        System.out.println(x);
}