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iOS Swift Collections and Control Flow Control Flow With Conditional Statements Working With Logical Operators

Devon Thompson
Devon Thompson
4,301 Points
Posted by Devon Thompson
Devon Thompson
4,301 Points

If Operator

Challenge Task 1 of 1

For this challenge, we'd like to know in a range of values from 1 to 100, how many numbers are both odd, and a multiple of 7.

To start us off, I've written a for loop to iterate over the desired range of values and named the local constant n. Your job is to write an if statement inside the for loop to carry out the desired checks.

If the number is both an odd number and a multiple of 7, append the value to the results array provided.

Hint: To check for an odd number use the not operator to check for "not even"

operators.swift 
var results: [Int] = []

for n in 1...100 {
  if n || even && multiplier * 7 {
    print(results.append[Int] = []) 
  }  
}

1 Answer

Thomas Dobson
Thomas Dobson
7,511 Points
Thomas Dobson
Thomas Dobson
7,511 Points

Devon,

Your not quite there. Try something like this:

var results: [Int] = []

for n in 1...100 {

      if (n % 7 == 0) && (n % 2 == 1) //checks that n is divisible by 7 AND is odd
      {
          results.append(n) //if n passes if logic, append it to the results array.
      }

}
Devon Thompson
Devon Thompson
4,301 Points
Devon Thompson
Devon Thompson
4,301 Points

Thank you very much. I notice that as I continue along the code challenges adds on to what I've already learned previously. Also, it gets a bit more complicated. The comments at the end also help me to understand a little bit better as well. Thanks again.