How to declare a float variable in Swift
In this tutorial, we will be learning how to declare a float variable in Swift with some simple examples.
You can also run the codes in Xcode that is built for Swift programming, more specifically to develop iOS and macOS applications.
To make it easier to understand. We will do the following things:
- We will declare a Float variable
- We will print the float variable value
- Then we will also check the data type of that variable.
var myNumber:Float = 18.789
By using the above piece of code we have declared a Float variable.
The variable name is
myNumber and the data type is
float. The value of that float variable is
The syntax to declare a float variable in Swift
var variableName: Datatype = float_value
The data type will be float in this case.
How to print a float value in Swift
var myNumber:Float = 18.789 print(myNumber)
You can also read: Create a playground in Xcode 13 and newer versions
Can we assign an integer value to a float variable in Swift:
Yes we can, just check the below code and output
var myNumber:Float = 18 print(myNumber)
As we can see it automatically places .0 after our value.
Check if a variable is Float or not in Swift
var myNumber:Float = 18.789 print(myNumber) print(type(of: myNumber))
Another method to initialize a float variable
var myNumber = Float(18.78) print(myNumber) print(type(of: myNumber))
We can also initialize in this way.
Some of you might think that what will happen if you don’t declare any data type?
Have a look at this too.
var myNumber = 18.78 print(myNumber) print(type(of: myNumber))