Practice - 026

A program to explain loop. Find sum of even numbers below a number 'n' (do-while pattern)

use text_io::scan;

fn main() {
    practice26()
}

fn practice26() {
    let n: u32;
    let mut i: u32 = 0;
    let mut sum: u32 = 0;

    println!("Enter the value of n:");
    scan!("{}", n);

    loop {
        sum = sum + i;
        i = i + 2;

        if i > n {
            break;
        }
    }

    println!("Sum of even numbers below {} is {}", n, sum);
}

Config

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

[dependencies]
text_io = "0.1.12"

Result

Enter the value of n:
4
Sum of even numbers below 4 is 6