Arithmetic Rounding in Rust 🦀

A simple and educational Rust program that performs arithmetic rounding — rounding any number entered by the user to the nearest whole number using standard mathematical logic.

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🧮 What It Does

When you run the program, it:

1. Prompts the user to enter a number (for example: 3.6 or -2.4).
2. Calculates the fractional part of the number.
3. Decides whether to round up or down based on standard rounding rules.
4. Displays the step-by-step reasoning and the final rounded result.

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📘 Example Run

Enter a number: 3.6

You entered: 3.6
Step 1: The fractional part is 0.6
Step 2: Since 0.6 >= 0.5, we round up
Result: 4