how do you write a if statement inside a loop? Doesn't the if statement create the loop?

No, an if statement is not a loop. A loop will continue to run until some condition is met that breaks it. Now that break could be dependent on the outcome of an if statement. But an if statement is its own thing. I'll show you the code and then try to break it down for you.

var results: [Int] = []

for n in 1...100 {
    // Enter your code below
    if (n % 2 != 0) && (n % 7 == 0) {
      results.append(n)
    } 
    // End code 
}

This is what this code translates to in English. Start with an empty list named "results". Start at one and go to 100. Is one odd and divisible by seven? No. Etc until we get to 7. Is seven odd and evenly divisible by 7? Yes! Put that in our results list. And now we check 8... 9... 10 etc. All the way up to 100. Hope this makes sense!