Author -  Sai gowtham

How to round a double to nearest Int in Swift

In this tutorial, we are going to learn about how to round a double to its nearest Int in Swift.

Using the round() method

We can round a double to the nearest Int by using the `round()` method in Swift.

Here is an example, that rounds the double `15.3` to the nearest integer `15.0`:

``````import Foundation

var a = 15.3
a.round()
print(a)``````

Output:

``15.0``

If the decimal value is `>=.5` then it rounds up to the nearest value. for example, it rounds the `15.7` to `16.0`.

``````import Foundation

var b = 15.7
b.round()
print(b) // 16.0``````

The `round()` method modifies the original value assigned to the variable, if you want to preserve an original value then you can use the `rounded()` method.

Example:

``````import Foundation

var b = 15.7
var c = b.rounded()

print(b) // 15.7
print(c) // 16.0``````

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