Ahmed-Asif1/practice ? reverse-engineered prompt

Build me a simple Rust practice project I can run from the terminal.

I want it to feel like a small learning playground, with a clean main program that runs without extra setup, and a few easy examples that show basic Rust stuff like variables, functions, loops, conditionals, and simple input or output. If it makes sense, add a tiny menu so I can choose what example to run, and include comments so I can follow what each part is doing.

Please make it easy to extend later, and add a few basic tests if that fits naturally. If you need to check current Rust best practices or docs, go ahead and look them up online.