Bird
0
0

Which of the following variable names is valid for a local variable in Ruby?

easy📝 Conceptual Q1 of 15
Ruby - Variables and Data Types
Which of the following variable names is valid for a local variable in Ruby?
A_tempValue
B2ndValue
CUser-Name
DTotal$
Step-by-Step Solution
Solution:

  1. Step 1: Check variable naming rules

    Local variables in Ruby must start with a lowercase letter or underscore and can contain letters, digits, and underscores.

  2. Step 2: Analyze each option

    _tempValue starts with an underscore and contains letters, valid.
    2ndValue starts with a digit, invalid.
    User-Name contains a hyphen, invalid.
    Total$ contains a dollar sign, invalid.

  3. Final Answer:

    _tempValue -> Option A

  4. Quick Check:

    Starts with underscore, no invalid characters [OK]
Quick Trick: Local vars start with lowercase or underscore [OK]
Common Mistakes:
MISTAKES
  • Starting variable names with digits
  • Using special characters like hyphens or dollar signs

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Ruby Quizzes
Arrays - Array modification (push, pop, shift, unshift) - Quiz 11easy Arrays - Array creation methods - Quiz 1easy Hashes - Merge and update methods - Quiz 12easy Methods - Explicit return statement - Quiz 1easy Ruby Basics and Runtime - Puts, print, and p output differences - Quiz 2easy Ruby Basics and Runtime - Everything is an object mental model - Quiz 4medium Ruby Basics and Runtime - Running scripts with ruby command - Quiz 14medium String Operations - String methods (upcase, downcase, strip) - Quiz 12easy String Operations - String freezing for immutability - Quiz 6medium Variables and Data Types - Dynamic typing vs strong typing - Quiz 7medium