Logical operators in Rust - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the logical AND operator (&&) do in Rust?

The logical AND operator (&&) returns true only if both conditions on its sides are true. If either side is false, the result is false.

beginner

What is the result of the logical OR operator (||) if one side is true and the other is false?

The logical OR operator (||) returns true if at least one side is true. So if one side is true and the other is false, the result is true.

beginner

Explain the logical NOT operator (!) in Rust.

The logical NOT operator (!) reverses the value of a boolean. If the value is true, ! makes it false. If false, ! makes it true.

beginner

What will this Rust code print? <br><pre>let a = true;
let b = false;
println!("{}", a && b);</pre>

It will print false because a is true but b is false, and true && false is false.

intermediate

How do logical operators help in decision making in Rust programs?

Logical operators combine multiple conditions to decide if a block of code should run. They help check if all, any, or none of the conditions are true.

What does the expression true || false evaluate to in Rust?

A false

B none

C error

D true

The logical OR (||) returns true if at least one side is true.

Which operator reverses a boolean value in Rust?

A !

B ||

C &&

D ==

The ! operator is the logical NOT, which reverses true to false and false to true.

What is the result of false && true in Rust?

A true if checked first

B true

C false

D error

Logical AND (&&) returns true only if both sides are true; here one side is false.

Which logical operator would you use to check if both conditions are true?

A &&

B ||

C !

D &

&& is the logical AND operator that checks if both conditions are true.

What does the expression !(true && false) evaluate to?

A none

B true

C error

D false

true && false is false, and !false is true.

Explain how the logical AND (&&), OR (||), and NOT (!) operators work in Rust with simple examples.

Think about when each operator returns true or false.

Describe a real-life situation where you might use logical operators in a Rust program.

Consider checking multiple conditions before doing something.