How to Convert String to Integer in Swift - Step by Step Examples

How to Convert String to Integer in Swift ?

To convert a String to an Integer in Swift, you can use the Int initializer.

In this example,

We create a constant named str with a string value of "123".
We then use the Int initializer to convert it to an integer and store the result in the constant number.
The Int initializer attempts to convert the string to an integer, returning nil if the conversion fails.
Finally, we print the value of number using print().

let str = "123"
if let number = Int(str) {
    print("Integer value: \(number)")
}

Integer value: 123

In this example,

We create a constant named str with a string value of "456".
We then use the Int initializer to convert it to an integer and store the result in the constant number.
The Int initializer attempts to convert the string to an integer, returning nil if the conversion fails.
Finally, we print the value of number using print().

let str = "456"
if let number = Int(str) {
    print("Integer value: \(number)")
}

Integer value: 456

In this tutorial, we learned How to Convert String to Integer in Swift language with well detailed examples.