Basic match usage in Rust - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to match the value and print the correct message.

Rust

let number = 3;
match number {
    [1] => println!("One"),
    2 => println!("Two"),
    3 => println!("Three"),
    _ => println!("Other"),
}

Drag options to blanks, or click blank then click option'

A1

B4

C0

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using a number that does not match the arm, causing the wrong message to print.

Leaving the blank empty or with invalid syntax.

The match arm for 1 should be 1 to correctly match the value and print "One".

2fill in blank

medium

Complete the code to match a character and print the correct message.

Rust

let letter = 'b';
match letter {
    'a' => println!("A"),
    [1] => println!("B"),
    'c' => println!("C"),
    _ => println!("Other"),
}

Drag options to blanks, or click blank then click option'

A'b'

B'd'

C'e'

D'f'

Attempts:

3 left

💡 Hint

Common Mistakes

Using double quotes instead of single quotes for characters.

Choosing a character that does not match the variable.

The match arm should be 'b' to match the variable letter and print "B".

3fill in blank

hard

Fix the error in the match expression by completing the blank.

Rust

let value = 10;
match value {
    5 => println!("Five"),
    [1] => println!("Ten"),
    _ => println!("Other"),
}

Drag options to blanks, or click blank then click option'

A15

Bten

C"10"

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string "10" instead of the integer 10.

Using a variable name that is not defined.

The match arm must be 10 (an integer) to match the value variable correctly.

4fill in blank

hard

Fill both blanks to create a match that prints if a number is even or odd.

Rust

let num = 4;
match num [1] 2 {
    0 => println!("Even"),
    [2] => println!("Odd"),
}

Drag options to blanks, or click blank then click option'

A%

B==

C_

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using == instead of % for modulus.

Not using _ as a wildcard in the second match arm.

Use the modulus operator % to get the remainder and _ to match all other cases (odd numbers).

5fill in blank

hard

Fill all three blanks to match a tuple and print the correct message.

Rust

let pair = (2, 3);
match pair {
    ([1], [2]) if [3] == 2 => println!("First is two"),
    _ => println!("Other"),
}

Drag options to blanks, or click blank then click option'

Ax

By

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names in the tuple and the if guard.

Not using variables to destructure the tuple.

Use variables x and y to destructure the tuple, then check if x equals 2.