Bird
0
0

What does the Ruby method upcase do to a string?

easy📝 Conceptual Q11 of 15
Ruby - String Operations
What does the Ruby method upcase do to a string?
AConverts all letters in the string to lowercase
BConverts all letters in the string to uppercase
CRemoves spaces from the start and end of the string
DReverses the string
Step-by-Step Solution
Solution:

  1. Step 1: Understand the method name

    The method upcase suggests making letters uppercase.

  2. Step 2: Recall the method effect on strings

    upcase changes all letters to uppercase, not lowercase or trimming spaces.

  3. Final Answer:

    Converts all letters in the string to uppercase -> Option B

  4. Quick Check:

    upcase = uppercase letters [OK]
Quick Trick: Remember: upcase = uppercase letters [OK]
Common Mistakes:
  • Confusing upcase with downcase
  • Thinking upcase removes spaces
  • Assuming upcase reverses the string

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Ruby Quizzes
Control Flow - Inline if and unless (modifier form) - Quiz 8hard Control Flow - Guard clauses pattern - Quiz 8hard Hashes - Dig method for nested access - Quiz 15hard Loops and Iteration - While loop - Quiz 13medium Loops and Iteration - Each as the primary iterator - Quiz 1easy Methods - Variable-length arguments (*args) - Quiz 2easy Operators and Expressions - Why operators are methods in Ruby - Quiz 4medium Operators and Expressions - Spaceship operator (<=>) - Quiz 7medium Variables and Data Types - Symbol type and immutability - Quiz 3easy Variables and Data Types - Boolean values (true, false, nil) - Quiz 11easy