Question

How to calculate the area of a triangle using Heron’s formula in Rust

Answer 1

use std::f64;

/// Function to calculate area using Heron's formula
fn heron_area(a: f64, b: f64, c: f64) -> f64 {
    let s = (a + b + c) / 2.0; // semi-perimeter

    (s * (s - a) * (s - b) * (s - c)).sqrt()
}

fn main() {
    let (a, b, c) = (6.0, 9.0, 13.0);

    // Check the validity of the triangle
    if a + b > c && a + c > b && b + c > a {
        let area = heron_area(a, b, c);
        println!("Area of the triangle = {:.4}", area);
    } else {
        println!("Invalid triangle sides!");
    }
}



/*
run:

Area of the triangle = 23.6643

*/

 

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