rustlings/exercises/22_clippy/clippy1.rs

// clippy1.rs
//
// The Clippy tool is a collection of lints to analyze your code so you can
// catch common mistakes and improve your Rust code.
//
// For these exercises the code will fail to compile when there are Clippy
// warnings. Check Clippy's suggestions from the output to solve the exercise.
//
// Execute `rustlings hint clippy1` or use the `hint` watch subcommand for a
// hint.

use std::f32;

fn main() {
    let pi = std::f32::consts::PI;
    let radius = 5.0f32;

    let area = pi * f32::powi(radius, 2);

    println!("The area of a circle with radius {:.2} is {:.5}!", radius, area)
}