Let's Calculate BMI

This project contains BMI calculators written in many different programming languages.

Calculation

We've chosen to calculate BMI the following way:

BMI=Weight / Height^2

All numbers are floating-point numbers.

Input

The command-line should be favored for accepting input. If that is not possible, then STDIN can be used.

Note: Weight should be in kilograms and height should be in meters.

Commandline

The following syntax should be used for commandline:

<command> <weight [kg]> <height [m]>

STDIN

Questions should be asked in the following order:

Enter weight [kg]:

Enter height [m]:

Answers should be filled in on either the same line or right below.

Output

The program should output the exact BMI-value with two decimals using the following pattern:

Your BMI is: <bmi>

Afterwards one of the following messages should be printed on the next line:

Condition	Response
BMI <= 18.5	You're underweight.
18.5 < BMI <= 25.0	You're healthy.
25.0 < BMI <= 30.0	You're overweight.
30.0 < BMI	Holy McShizzle, you're freaking whale!

A possible implementation:

if(bmi <= 18.5)
{
	output="You're underweight.";
}
else if(bmi <= 25)
{
	output="You're healthy.";
}
else if(bmi <= 30)
{
	output="You're overweight.";
}
else
{
	output="Holy McShizzle, you're freaking whale!";
}