For loop in Rust - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print each number from 1 to 3.

Rust

for [1] in 1..4 {
    println!("{}", [1]);
}

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

Ai

Bval

Cx

Dnum

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name that is not consistent inside the loop.

Using a variable name that is a Rust keyword.

The variable num is used as the loop variable to iterate over the range 1..4.

2fill in blank

medium

Complete the code to sum numbers from 1 to 5 using a for loop.

Rust

let mut sum = 0;
for [1] in 1..6 {
    sum += [1];
}
println!("Sum: {}", sum);

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

Ai

Bx

Cnum

Dval

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different variable name inside the loop body.

Forgetting to declare sum as mutable.

The variable i is used as the loop variable to add each number to sum.

3fill in blank

hard

Fix the error in the for loop to print each element in the vector.

Rust

let numbers = vec![10, 20, 30];
for [1] in &numbers {
    println!("{}", [1]);
}

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

Anumbers

Bi

Cnum

Dval

Attempts:

3 left

💡 Hint

Common Mistakes

Using the vector name as the loop variable.

Not using a reference to the vector.

The loop variable num iterates over references to elements in the vector numbers.

4fill in blank

hard

Fill both blanks to create a for loop that prints even numbers from 2 to 10.

Rust

for [1] in (2..11).step_by([2]) {
    println!("{}", [1]);
}

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

Anum

B2

Ci

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong step value.

Using a loop variable name that conflicts with other variables.

The variable num iterates over the range stepping by 2 to print even numbers.

5fill in blank

hard

Fill all three blanks to create a for loop that prints the squares of numbers from 1 to 5.

Rust

for [1] in 1..6 {
    let square = [2] [3] [2];
    println!("{}", square);
}

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

Ax

C**

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using the ** operator, which does not exist in Rust.

Using different variable names inside and outside the loop.

The loop variable x is used to calculate the square using multiplication x * x.