How to Declare a Float Variable in Swift?

Declare Float Variable

To declare a variable of type Float in Swift, use : Float after the variable name.

var amount: Float

Swift Example

Let us write a swift program, in which we declare a variable with the name amount, and declare this variable as type Float. Later, we will assign a value 2.99 to this variable and print it.

main.swift

import Foundation

var amount: Float
amount = 2.99
print(amount)

Program Output

2.99

The type of the variable amount is Float, because of which we could assign a Float value to the variable.

We can also programmatically check the type of the variable amount using type(of:) function.

main.swift

import Foundation

var amount: Float
print(type(of: amount))

Program Output

Float

Summary

We have learnt how to declare a variable of type Float in Swift.