Loop execution flow in Rust - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the basic purpose of a loop in Rust?

A loop repeats a block of code multiple times until a condition is met or the loop is explicitly stopped.

beginner

What keyword is used in Rust to create an infinite loop?

The keyword loop creates an infinite loop that runs until it is stopped with break.

beginner

How does the break statement affect loop execution?

The break statement immediately stops the loop and exits it, continuing with the code after the loop.

intermediate

What does the continue statement do inside a loop?

The continue statement skips the rest of the current loop cycle and moves to the next iteration.

intermediate

How can you label loops in Rust and why would you do that?

You can add a label like 'label: before a loop to identify it. This helps control nested loops by specifying which loop to break or continue.

Which Rust keyword creates a loop that runs forever unless stopped?

A loop

B while

C for

D repeat

The loop keyword creates an infinite loop in Rust.

What happens when break is executed inside a loop?

A The program crashes

B The loop skips to the next iteration

C The loop restarts from the beginning

D The loop stops immediately

break stops the loop immediately and continues after the loop.

What does continue do inside a loop?

A Skips the rest of the current iteration

B Stops the loop

C Exits the program

D Restarts the entire loop

continue skips the rest of the current loop cycle and moves to the next iteration.

How do you label a loop in Rust?

A label loop { ... }

B 'label: loop { ... }

C loop 'label { ... }

D loop label: { ... }

You add a label before the loop like 'label: loop { ... }.

Why use loop labels in Rust?

A To name variables inside the loop

B To create infinite loops

C To control which nested loop to break or continue

D To speed up the loop

Labels help specify which nested loop to control with break or continue.

Explain how break and continue affect the flow of a loop in Rust.

Think about what happens when you want to stop or skip inside a loop.

Describe how loop labels work and give an example of when you might need them.

Consider nested loops and controlling them precisely.