CSCI 1301 – Lab #8
Exercise
The purpose of this exercise is to apply your knowledge about assignments statements,
arithmetic expressions and conditional statements discussed during the lectures.
In this lab exercise, you will enhance the functionality of the java application you
implemented in Lab #4. Your java application will, as before, compute the Body Mass
Index (BMI) according to a person's weight and height but it will also perform input
validation and determine the weight category of the user. For this exercise, modify the
main method of the class BMI you wrote in Lab #4 to do the following:
a)
The program should prompt the user for his/her weight in kilograms, if the user
enters a number less than zero the program will display a message and terminate.
b)
Afterwards, the program should prompt the user for his/her height in meters, if the
user enters a number less than zero, the program will display a message and
terminate.
c)
Then the program will compute the BMI of the user as:
)(
.)(
2
metersheight
kgsweight
BMI =
d)
After computing the user’s BMI score, the program will display:
•
The user’s weight in both kilograms and pounds
•
The user’s height in meters as well as in feet and inches
•
The user’s BMI score and the user’s weight category according to the
following table:
BMI Score Weight Category
Less than 18.5 Underweight
Greater than or equal to 18.5 and less than 25 Normal
Greater than or equal to 25 and less than 30 Overweight
Greater than or equal to 30 Obesity
e)
Additionally, your program will display a disclaimer that states the limitations
of the BMI as follows:
Disclaimer:
The BMI score is valid for both men and women but it does have some limits. The
limits are:
a) It may overestimate body fat in athletes and others who have a muscular build.
b) It may underestimate body fat in older persons and others who have lost muscle
mass.
