Module 3: Control Flow

Practice Tasks

Complete these tasks to reinforce what you learned in this module.

Task 1: if expression

Use an if/else expression to set a variable parity to "even" when n is even and "odd" when odd, then print it. Use n = 4.

Expected Output:

Hint: if in Rust is an expression; both branches must produce the same type. Use the remainder operator to detect even/odd.

Starter Code:

task.rs

// Task 1: if expression for parity. See tasks/TASKS.md.

fn main() {
    let n = 4;
    // YOUR CODE HERE: let parity = if n % 2 == 0 { "even" } else { "odd" }; then print
    todo!("Implement parity with if expression");
}

Task 2: for loop sum

Use a for loop over 1..=5 to compute the sum of 1 through 5 and print it.

Expected Output:

Hint: Use a mutable variable for the sum. The theory shows how to write a for loop over an inclusive range.

Starter Code:

task.rs

// Task 2: for loop sum. See tasks/TASKS.md.

fn main() {
    // YOUR CODE HERE: sum 1..=5, print "sum = 15"
    todo!("Implement for loop sum");
}