You want to check if a number is NOT zero and is positive using Boolean logic in Swift. Which expression correctly represents this?

hard📝 Application Q8 of 15

Swift - Data Types

Alet check = (number != 0) && (number > 0)

Blet check = !(number == 0) || (number > 0)

Clet check = number != 0 || number > 0

Dlet check = !(number != 0) && !(number > 0)

Step-by-Step Solution

Solution:

Step 1: Understand the conditions
We want number not equal to zero AND number greater than zero.
Step 2: Evaluate each option
let check = (number != 0) && (number > 0) uses (number != 0) && (number > 0) which matches the requirement. let check = !(number == 0) || (number > 0) uses OR which is incorrect. let check = number != 0 || number > 0 uses OR which is incorrect. let check = !(number != 0) && !(number > 0) negates both conditions which is opposite of what is needed.
Final Answer:
let check = (number != 0) && (number > 0) -> Option A
Quick Check:
Use && to combine both positive and non-zero checks [OK]

Quick Trick: Use && to require both conditions true simultaneously [OK]

Common Mistakes:

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