round a number to the nearest hundredth in swift

To round a number to the nearest hundredth in Swift, you can use the round() function from the Foundation framework. Here's an example:

main.swift
let num: Double = 3.14159265359
let roundedNum = round(num * 100) / 100 // 3.14
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In this example, we first multiply the number by 100 to move the decimal point two places to the right. Then, we round it to the nearest integer using round(). Finally, we divde the rounded number by 100 to move the decimal point two places back to the left. The result is a number rounded to the nearest hundredth.