Swift - Data Types
Which of the following is the correct way to write a floating-point literal with an exponent in Swift?
Which of the following is the correct way to write a floating-point literal with an exponent in Swift?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand floating-point literals with exponents
Swift allows floating-point literals with 'e' or 'E' followed by an optional sign and digits.Step 2: Check each option
let value = 3.14e2 uses lowercase 'e' with positive exponent. let value = 3.14E+2 uses uppercase 'E' with explicit plus sign. let value = 3.14e-2 uses lowercase 'e' with negative exponent. All are valid.Final Answer:
All of the above -> Option CQuick Check:
Floating-point exponent literals = all valid [OK]
Quick Trick: Use e or E with optional + or - for exponents [OK]
Common Mistakes:
- Omitting the exponent digits after e/E
- Using invalid characters in exponent
- Confusing e with multiplication
Master "Data Types" in Swift
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Swift Quizzes