Implemented the loop for reading input into a string without using th…

[kkaname]

…e relational operators.

As per asked in the excercise question, I have implemented the loop using while loop and break statement without using any relational operator(&& and ||).

Summary by CodeRabbit

• Refactor
  • Simplified loop control for clearer input processing
  • Improved end-of-input handling to ensure consistent trailing newline output
  • Streamlined character accumulation and branching for more readable flow

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

Walkthrough

A loop control structure refactoring in a single exercise file. Replaced conditional-based loop logic with a while(1) infinite loop containing explicit break conditions for EOF, newline, and buffer limit scenarios, and restructured input accumulation using else-if branching.

Changes

Cohort / File(s)	Summary
Loop structure refactoring chapter_2/exercise_2_02/loop.c	Replaced previous loop control flow with while(1) and added explicit break conditions for EOF, newline, and MAXLINE-1 buffer limit. Introduced local c and i, moved getchar() into the loop, reworked input accumulation with if/else if branches, and ensured output prints the accumulated string followed by a newline (prints newline on EOF).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

• Single-file change localized to loop.c
• Straightforward loop refactor and input handling adjustments
• Check boundary condition for MAXLINE-1 and correct handling of EOF/newline

Poem

While loops spin in circles wide,
Breaking free with newfound pride,
EOF tiptoes, newlines sing,
A rabbit taps the keyboard—ping! 🐇🔁

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: implementing a loop for reading input into a string while avoiding relational operators, which directly matches the PR's core objective and the changes in loop.c.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between fb49ce7 and 603ddad.

📒 Files selected for processing (1)

• chapter_2/exercise_2_02/loop.c (1 hunks)

🔇 Additional comments (1)

chapter_2/exercise_2_02/loop.c (1)

7-7: Critical issue fixed: EOF detection now works correctly.

The variable shadowing issue has been resolved. Line 7 properly declares int c and line 20 now assigns to it without redeclaring, ensuring EOF detection works reliably.

Also applies to: 20-20

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[coderabbitai]

Actionable comments posted: 2

🧹 Nitpick comments (1)

chapter_2/exercise_2_02/loop.c (1)

9-13: Optional: Consider removing commented-out code.

The commented code from the previous implementation provides useful context but could be removed for cleaner code. The NOTE at lines 40-45 already explains the multiplication approach.

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 396a2cd and fb49ce7.

📒 Files selected for processing (1)

• chapter_2/exercise_2_02/loop.c (1 hunks)

🔇 Additional comments (1)

chapter_2/exercise_2_02/loop.c (1)

15-31: Implementation successfully avoids relational operators, but needs fixes.

The while(1) loop with separate break conditions successfully avoids using && and || operators as required by the exercise. The buffer overflow protection logic (lines 16-18) is correct.

However, the critical bug on line 20 must be fixed before this implementation is correct.

[coderabbitai]

⚠️ Potential issue | 🟡 Minor

Questionable: Extra newline printed on EOF.

Lines 25-28 print a newline when EOF is encountered, but not for other exit conditions (newline or buffer full). This creates inconsistent output behavior.

Consider whether this extra newline is necessary or if EOF should be handled like the newline case (just break).

🤖 Prompt for AI Agents

In chapter_2/exercise_2_02/loop.c around lines 25 to 28, the code prints an
extra newline when c == EOF which causes inconsistent output compared to other
exit conditions; remove the printf("\n") so EOF is handled the same as the
newline/buffer-full cases (just break), or restructure the branch to break
immediately on EOF without emitting any characters.

[kkaname]

@ohkimur So i have implemented the new changes, and as per you said earlier you can merge the file.
Also i have tested the code, it runs as intened, so no issues with it.