Arithmetic operators in Rust - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the '+' operator do in Rust?

The '+' operator adds two numbers together. For example, 2 + 3 equals 5.

beginner

How do you perform multiplication in Rust?

Use the '*' operator to multiply two numbers. For example, 4 * 5 equals 20.

intermediate

What is the result of 10 / 3 in Rust when using integer types?

When dividing integers, Rust performs integer division, so 10 / 3 equals 3 (the decimal part is dropped).

beginner

What does the '%' operator do in Rust?

The '%' operator gives the remainder of a division. For example, 10 % 3 equals 1.

intermediate

Can you use arithmetic operators with floating-point numbers in Rust?

Yes, you can use '+', '-', '*', and '/' with floating-point numbers (like f32 or f64). The operations work as expected with decimals. The '%' operator is not supported for floating-point types in Rust.

What is the result of 7 + 5 in Rust?

A 75

B 2

C 12

D Error

The '+' operator adds numbers, so 7 + 5 equals 12.

Which operator gives the remainder of a division?

A %

B -

C +

D /

The '%' operator returns the remainder after division.

What happens when you divide two integers in Rust and the result is not whole?

A It rounds up

B It rounds down

C It returns a float

D It drops the decimal part

Integer division drops the decimal part, so 10 / 3 equals 3.

Which operator is used for multiplication in Rust?

A /

B *

C +

D -

The '*' operator multiplies two numbers.

Can you use the '+' operator with floating-point numbers in Rust?

A Yes

B No

C Only with integers

D Only with strings

The '+' operator works with floating-point numbers as well as integers.

Explain how the '%' operator works in Rust and give an example.

Think about what is left after dividing one number by another.

Describe what happens when you divide two integers in Rust and the result is not a whole number.

Rust does not round but cuts off the decimal.