Interview Questions on Rust Programming (MCQ)

In this article, we have presented the most asked Interview Questions on Rust Programming (MCQ). You must try to answer this to judge your expertise in Rust Programming Language. All questions have been explained with answers.

You can learn some basics of Rust before answering the questions.
Let us get started answering Interview Questions on Rust Programming:

Consider this code snippet in Rust:

pub struct AveragedCollection {
    list: Vec<i32>,
    average: f64,
}

Consider the following Rust code:

pub struct AveragedCollection {
    list: Vec<i32>,
    average: f64,
}

impl AveragedCollection {
    pub fn add(&mut self, value: i32) {
        self.list.push(value);
        self.update_average();
    }
}

To bring B Tree data structure in scope of the code from the Rust Collections:

use std::collections::BTreeMap;

Consider the following Rust code snippet:

struct Foo<T: f32> {
    f: T,
}

Consider this code snippet in Rust:

type Name = String;
let x: Name = "opengenus".to_string();

Consider this code snippet in Rust:

struct HasDrop;
impl Drop for HasDrop {
    fn drop(&mut self) {
        println!("Dropping!");
    }
}
fn main() {
    let x = HasDrop;
}

In C, a marco is defined as follows:

#define FIVE_TIMES(x) 5 * x

In Rust, a macro is defined as follows:

macro_rules! foo {
    () => (let x = 3;);
}

Consider this Rust code snippet:

if true {
    unreachable!();
}

Consider the following Rust code:

fn main() {
    let (.., x, y) = (0, 1, ..);
    print!("{}", b"066"[y][x]);
}

Consider the following Rust code snippet:

use std::mem;

fn main() {
    let a;
    let a = a = true;
    print!("{}", mem::size_of_val(&a));
}

Consider the following Rust code:

fn main() {
    let mut x = 4;
    --x;
    print!("{}{}", --x, --x);
}

Consider the following Rust code:

fn main() {
    let mut a = 5;
    let mut b = 3;
    print!("{}", a-- - --b);
}

With this article at OpenGenus, you must have a strong hold on Rust by answering the above questions. Enjoy and best of luck with your examination / coding interview.