Swift – Create Integer Variable
To create an Integer variable in Swift, declare the variable as Int, or assign any integer value to the variable, or assign new Int
instance to the variable.
In the following code snippet, we declare a variable n
of type Int.
var n: Int
In the following code snippet, we define a variable n
and assign an integer value to the variable.
var n = 0
In the following code snippet, we define a variable n
and assign a new instance of Int
.
var n = Int()
Let us now programmatically print the type of the variable to output, and check if the type of the variable is Int or not.
First, we will start with the process of explicit declaration of variable as Int.
main.swift
import Foundation var n: Int print(type(of: n))
We used type(of:) generic function to get the data type of the variable.
Output
Int
Now, assign an integer value to the variable, and check if the type of the variable is Int.
main.swift
import Foundation var n = 0 print(type(of: n))
Output
Int
Now, we will check for new Int
assignment process.
main.swift
import Foundation var n = Int() print(type(of: n))
Output
Int
In all the three cases, we have determined that the variable is of type Int.
Conclusion
Conclusion this Swift Tutorial, we learned how to declare or create a Int (Integer) variable in Swift, in different ways, with the help of examples.