Week 2 day 3 by Ngozistephen · Pull Request #7 · Bloceducare/Web3bridge-Rust-Masterclass-Cohort-II

Ngozistephen · 2026-02-09T10:31:30Z

Task Submission PR

Student Info:

Registered Name: Ngozi Stephen
Week: week 2
Day: Day 3

Task Details:

Task Name: User Input
Task Description: Briefly describe the task completed.

Checklist Before Submitting:

[ yes] My code follows the repository folder structure.
[ yes] I have properly named my files and folders.
[ yes] I have documented my code where necessary.
[yes ] I have tested my solution and ensured it works as expected.

Additional Comments:

If any, mention here.

Copilot

Pull request overview

This PR submits Week 2 tasks, including a Day 3 “User Input” Rust CLI exercise (power options) and an additional Day 5 expense-tracker CLI with basic CRUD and file saving.

Changes:

Added Day 3 Rust CLI that parses a user-entered power option and prints the corresponding action.
Added Day 5 Rust expense tracker CLI with add/view/update/delete and persistence to a text file.
Added Cargo project scaffolding (Cargo.toml, Cargo.lock, .gitignore) for both submissions.

Reviewed changes

Copilot reviewed 9 out of 11 changed files in this pull request and generated 18 comments.

Show a summary per file

File	Description
submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/stephen_expences.txt	Sample/generated saved output for the expense tracker.
submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/tracker.rs	Implements `ExpenseTracker` storage and file saving.
submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs	CLI menu + user input handling for expense tracker.
submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/expense.rs	Defines `Expense` and `TransactionType`.
submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/Cargo.toml	Cargo manifest for the Day 5 submission.
submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/Cargo.lock	Cargo lockfile for the Day 5 submission.
submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/.gitignore	Ignores Rust build output (`target`).
submissions/week-2/day-3/Stephen-Ngozi-User-Input/src/main.rs	Day 3 CLI that maps user input to an enum and prints an action.
submissions/week-2/day-3/Stephen-Ngozi-User-Input/Cargo.toml	Cargo manifest for the Day 3 submission.
submissions/week-2/day-3/Stephen-Ngozi-User-Input/Cargo.lock	Cargo lockfile for the Day 3 submission.
submissions/week-2/day-3/Stephen-Ngozi-User-Input/.gitignore	Ignores Rust build output (`target`).

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Copilot · 2026-02-09T10:37:26Z

submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

+
+                let new_expense = tracker.add(name, amount, tx_type);
+                println!(" Expense added successfully!");
+                println!("ID: {}, Name: {}, Amount: ${:.2}, Type: {:?}", 


This prints amount with $ here, but other flows (view/update) print Naria... for the amount. Pick one currency/format and keep it consistent across commands.

Suggested change

println!("ID: {}, Name: {}, Amount: ${:.2}, Type: {:?}",

println!("ID: {}, Name: {}, Amount: Naria{:.2}, Type: {:?}",

Copilot · 2026-02-09T10:37:27Z

submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

+                  println!("All Expenses");
+                    for expense in expenses {
+                        println!("ID: {} | Name: {} | Amount: Naria{:.2} | Type: {:?}", 
+                                expense.id, expense.name, expense.amount, expense.tx_type);
+                    }  


This prints amount with Naria..., but the add flow prints $.... Pick one currency/format and keep it consistent across commands.

submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

Copilot · 2026-02-09T10:37:27Z

submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

+                if tracker.update(id, amount, tx_type){
+                    println!("Expense Updated Successfu");
+


If tracker.update(...) returns false (ID not found), nothing is printed, so the user gets no feedback. Add an else branch to print a “not found” message.

Copilot · 2026-02-09T10:37:30Z

submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

+mod expense;
+mod tracker;
+


The PR metadata/title is for “Week 2 Day 3”, but this PR also adds a full Day 5 submission under submissions/week-2/day-5/.... If Day 5 work is intended, update the PR title/description; otherwise split into separate PRs.

Copilot · 2026-02-09T10:37:30Z

submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

+                    }else {
+                        println!("Expense with ID {} not found!", id);
+
+                    }


After tracker.update(...) succeeds, the follow-up tracker.values.get(&id) should always return Some, making the else branch effectively unreachable. Consider having update return the updated expense (or Option<&Expense>) to avoid a second lookup and dead code.

Suggested change

}else {

println!("Expense with ID {} not found!", id);

}

}

} else {

println!("Expense with ID {} not found!", id);

Copilot · 2026-02-09T10:37:30Z

submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/stephen_expences.txt

+ID: 2, Name: Beans, Amount: 5000.00, Type: Credit
+ID: 1, Name: Rice, Amount: 20000.00, Type: Credit


stephen_expences.txt looks like a runtime-generated output file (it’s created by save_to_file). Committing generated state makes future PRs noisy and can lead to merge conflicts; consider removing it from the submission and/or adding it to .gitignore (or writing under target//a dedicated data/ directory that is ignored).

Copilot · 2026-02-09T10:37:31Z

submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "Stephen-Ngozi-Merkle-Tree"


Cargo package names with uppercase letters (e.g., Stephen-Ngozi-Merkle-Tree) can produce warnings and are not accepted on crates.io. Consider using a lowercase, kebab-case name (e.g., stephen-ngozi-merkle-tree).

Suggested change

name = "Stephen-Ngozi-Merkle-Tree"

name = "stephen-ngozi-merkle-tree"

Copilot · 2026-02-09T10:37:31Z

submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

+                };
+
+                if tracker.update(id, amount, tx_type){
+                    println!("Expense Updated Successfu");


Typo in success message: Successfu should be Successful.

Suggested change

println!("Expense Updated Successfu");

println!("Expense Updated Successful");

…-Masterclass-Cohort-II into week-2-day-3

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Ngozistephen added 4 commits February 9, 2026 06:35

Add Rust project files and .gitignore

a4a6319

Initialize Week 2 Day 5 Assignment - Stephen Ngozi

ad4803b

Assignment on user-Input

670e60b

Add Week 2 Day 3 task for User Input

3dd245f

Copilot AI review requested due to automatic review settings February 9, 2026 10:31

Copilot started reviewing on behalf of Ngozistephen February 9, 2026 10:31 View session

Copilot AI reviewed Feb 9, 2026

View reviewed changes

Ngozistephen and others added 6 commits February 11, 2026 01:46

Merge branch 'main' of https://github.com/Bloceducare/Web3bridge-Rust…

4b78e21

…-Masterclass-Cohort-II into week-2-day-3

Merge branch 'main' of https://github.com/Bloceducare/Web3bridge-Rust…

ab3e200

…-Masterclass-Cohort-II into week-2-day-3

Add Week 3 Day-3 - CLI- Project Stephen Ngozi

3805672

Update submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

fee035c

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Update submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

aba54cb

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Update submissions/week-2/day-5/Stephen-Ngozi-Merkle-Tree/src/main.rs

3aae61b

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

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	println!("ID: {}, Name: {}, Amount: ${:.2}, Type: {:?}",
	println!("ID: {}, Name: {}, Amount: Naria{:.2}, Type: {:?}",

		if tracker.update(id, amount, tx_type){
		println!("Expense Updated Successfu");

		ID: 2, Name: Beans, Amount: 5000.00, Type: Credit
		ID: 1, Name: Rice, Amount: 20000.00, Type: Credit

	name = "Stephen-Ngozi-Merkle-Tree"
	name = "stephen-ngozi-merkle-tree"

	println!("Expense Updated Successfu");
	println!("Expense Updated Successful");

		mod expense;
		mod tracker;

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Ngozistephen commented Feb 9, 2026

Task Submission PR

Student Info:

Task Details:

Checklist Before Submitting:

Additional Comments:

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