Practice - 024

A program to explain MATCH (To find area of circle, square rectangle and triangle.)

use text_io::scan;

fn main() {
    practice24()
}

fn practice24() {
    let choice: i32;
    let (a, area, b): (f64, f64, f64);

    println!(
        r"Enter your choice
1 - Circle
2 - Square
3 - Rectangle
4 - Triangle
"
    );

    scan!("{}", choice);

    match choice {
        1 => {
            println!("Enter radius: ");
            scan!("{}", a);
            area = 3.14 * a * a;
            println!("Area = {}", area);
        }
        2 => {
            println!("Enter side: ");
            scan!("{}", a);
            area = a * a;
            println!("Area = {}", area);
        }
        3 => {
            println!("Enter sides: ");
            scan!("{} {}", a, b);
            area = a * b;
            println!("Area = {}", area);
        }
        4 => {
            println!("Enter base, height: ");
            scan!("{} {}", a, b);
            area = a * b / 2.0;
            println!("Area = {}", area);
        }
        _ => {
            println!("Choice invalid");
        }
    }
}

Config

[package]
name = "practice"
version = "0.1.0"
edition = "2021"

[dependencies]
text_io = "0.1.12"

Result

Enter your choice
1 - Circle
2 - Square
3 - Rectangle
4 - Triangle

2
Enter side: 
3
Area = 9