Added calculate-BMI.ps1

scripts/calculate-BMI.ps1

@@ -0,0 +1,25 @@
+<#
+.SYNOPSIS
+	Calculate the BMI
+.DESCRIPTION
+	This PowerShell script calculates the BMI.
+.EXAMPLE
+	PS> ./calculate-BMI.ps1
+.LINK
+	https://github.com/fleschutz/PowerShell
+.NOTES
+	Author: Markus Fleschutz | License: CC0
+#>
+
+#requires -version 5.1
+
+try {
+	[float]$height = Read-Host("Enter your height in m ")
+	[float]$weight = Read-Host("Enter your weight in kg")
+	$BMI = $weight / ($height * $height)
+	"Your BMI is $BMI, for adults the WHO regards <16 as Underweight (severe thinness), 16-17 as Underweight (moderate thinness), 17-18.5 as Underweight (mild thinness), 18.5-25 as Normal range, 25-30 as Overweight (pre-obese), 30-35 as Obese (class I), 35-40 as Obese (class II), and >=40 as Obese (class III)."
+	exit 0 # success
+} catch {
+	"⚠️ ERROR: $($Error[0]) in script line $($_.InvocationInfo.ScriptLineNumber)."
+	exit 1
+}