Swift Operators Basics

Learn about Swift Operators. These essential symbols perform various operations on values and variables, and we’re going to explore them with easy-to-understand examples.

Assignment Operator = in Swift

The assignment operator = is used to assign a value to a variable or constant.

var score = 10
let constantScore = score

Arithmetic Operators

Addition +

Used to add two values.

let sum = 5 + 3  // sum equals 8
    

Subtraction –

Used to subtract one value from another.

let difference = 5 - 3  // difference equals 2
    

Multiplication *

Used to multiply two values.

let product = 5 * 3  // product equals 15
    

Division /

Used to divide one value by another.

let quotient = 6 / 3  // quotient equals 2
    

Compound Assignment Operators

Compound assignment operators combine assignment = with another operation.

Addition Assignment +=

Adds and assigns the result.

var total = 0
total += 5  // total is now 5

Subtraction Assignment -=

Subtracts and assigns the result.

var batteryLife = 100
batteryLife -= 15  // batteryLife is now 85

Multiplication Assignment *=

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