[Solved] Find the error in this Swift code snippet: let number = 0o89 — Ans: Octal literals cannot contain digits 8 or 9 | Swift

Swift - Data Types

Find the error in this Swift code snippet:

let number = 0o89

AOctal literals must start with 0x

BOctal literals cannot contain digits 8 or 9

CMissing decimal point for floating number

DUnderscores required for readability

Step-by-Step Solution

Solution:

Step 1: Recall octal literal rules
Octal literals start with 0o and only digits 0-7 are allowed.
Step 2: Identify invalid digits
The literal 0o89 contains digits 8 and 9 which are invalid in octal.
Final Answer:
Octal literals cannot contain digits 8 or 9 -> Option B
Quick Check:
Octal digits allowed = 0 to 7 only [OK]

Quick Trick: Octal digits must be 0-7 after 0o prefix [OK]

Common Mistakes:

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