Answer to Question #125069 in C++ for Zeeshan Ali

Question

Write a program that prompts the user to enter a weight in pounds and height in inches and
display the Body Mass Index. Note that one pound is 0.45359237 kilograms and one inch is 0.0254 meters.
Where:
BMI Interpretation
below 16 seriously underweight
16–18 underweight
18–24 normal weight
24–29 overweight
29–35 seriously overweight
above 35 gravely overweight

Answer 1

Solution without <string> library.

#include <iostream>
using namespace std;

int main()
{
	// first user prompt
	cout << "Please, print a weight (in pounds)" << endl;

	// reading a weight
	double pounds;
	cin >> pounds;

	// second user prompt
	cout << "Please, print a height (in inches)" << endl;

	// reading a height
	double inches;
	cin >> inches;

	// calculating bmi
	double kilos = pounds * 0.453592;
	double meters = inches * 0.0254;
	double bmi = kilos / (meters * meters);
	cout << "Your BMI is " << bmi << endl;

	// calculating bmi interpretation
	if (bmi < 16) 
		cout << "Seriously underweight" << endl;
	else if (16 <= bmi && bmi < 18)
		cout << "Underweight" << endl;
	else if (18 <= bmi && bmi < 24)
		cout << "Normal weight" << endl;
	else if (24 <= bmi && bmi < 29)
		cout << "Overweight" << endl;
	else if (29 <= bmi && bmi < 35)
		cout << "Seriously overweight" << endl;
	else
		cout << "Gravely overweight" << endl;

	/*
	Example:

	Please, print a weight (in pounds)
	176
	Please, print a height (in inches)
	70
	Your BMI is 25.2531
	Overweight
	*/
}