[Solved] Identify the problem in this Ruby code: str = "test" str.capitalize puts str — Ans: The string is not changed because capitalize is non-bang. | Ruby

Ruby - Methods

Identify the problem in this Ruby code:

str = "test"
str.capitalize
puts str

AThe string is not changed because <code>capitalize</code> is non-bang.

BMissing bang method <code>capitalize!</code> causes syntax error.

CNo problem; output is "Test".

DThe code will raise an exception.

Step-by-Step Solution

Solution:

Step 1: Understand difference between capitalize and capitalize!
capitalize returns a new string with first letter capitalized but does not change original.
Step 2: Check output of puts str
Since str was not changed, it prints "test" instead of "Test".
Final Answer:
The string is not changed because capitalize is non-bang. -> Option A
Quick Check:
Non-bang methods do not modify original [OK]

Quick Trick: Use bang methods to modify original strings [OK]

Common Mistakes:

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