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Homework answers / question archive / Rust Programming Q6 Rust 8 Points Q6

Rust Programming Q6 Rust 8 Points Q6

Computer Science

Rust Programming

Q6 Rust

8 Points

Q6.1 Ownership

4 Points

Consider the following snippet of Rust code:

let a = String::from("ferris");

let b = String::from("rustacean");

let c = &a;

let d = b;

let e = c;

Which variable currently owns the string "ferris"?

a

b

c

d

e

Which variable currently owns the string "rustacean"?

a

b

c

d

e

Q6.2 Ownership and Borrowing

4 Points

Consider the following snippet of Rust code:

fn main() {

    let a = String::from("cmsc330");

    let b = &a;

    {

        let mut c = a;

        c.push_str(" rocks!");

        println!("{}", c);

    }

    /* HERE */

}

At the line marked "HERE", which of the following is true?

a owns the string "cmsc330 rocks!"

b owns the string "cmsc330 rocks!"

The string has been dropped

This code does not compile

 

 

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