Arithmetic operators in Go - Cheat Sheet & Quick Revision

Recall & Review

beginner

What are arithmetic operators in Go?

Arithmetic operators are symbols used to perform basic math operations like addition (+), subtraction (-), multiplication (*), division (/), and modulus (%).

beginner

What does the % operator do in Go?

The % operator gives the remainder after dividing two integers. For example, 7 % 3 equals 1 because 7 divided by 3 leaves a remainder of 1.

intermediate

How do you perform division with floating-point numbers in Go?

To divide floating-point numbers, use variables of type float32 or float64. For example, 5.0 / 2.0 equals 2.5.

intermediate

What happens if you divide by zero in Go?

Dividing by zero causes a runtime panic in Go. You should always check the divisor before dividing to avoid this error.

beginner

Write a Go expression to add two variables a and b.

The expression is: a + b

Which operator is used for multiplication in Go?

A -

B *

C +

D /

The * symbol is used for multiplication.

What is the result of 10 % 4 in Go?

A 2

B 0

C 4

D 6

10 divided by 4 leaves a remainder of 2, so 10 % 4 equals 2.

What type should variables be to get a decimal result when dividing in Go?

A bool

B string

C int

D float32 or float64

Only float32 or float64 types can hold decimal numbers for division results.

What happens if you divide an integer by zero in Go?

A Returns zero

B Returns infinity

C Causes a runtime error (panic)

D Returns NaN

Dividing by zero causes a runtime panic error in Go.

Which operator subtracts one number from another in Go?

A -

B *

C +

D /

The - operator subtracts numbers.

Explain the use of arithmetic operators in Go with examples.

Think about how you do basic math with numbers in Go code.

What precautions should you take when using division in Go?

Consider what happens if the divisor is zero or if you want decimal results.