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https://github.com/a1cd/bmi-calculator

An AP CS assignment
https://github.com/a1cd/bmi-calculator

java

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An AP CS assignment

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- .java files are in [src/main/java](https://github.com/a1cd/BMI-Calculator/tree/master/src/main/java)

- test.java files are in [src/test/java](https://github.com/a1cd/BMI-Calculator/tree/master/src/test/java)



# Lab 02.01: BMI Calculator

(see Veracross for a due date/time)



## Lab Description:

Write a class called `BMICalc` that prompts the user with

two input statements:



1. Enter your height in feet and inches (format 6'2"):

2. Enter your weight in pounds:



The computer must wait for the user to respond to each question.

Following the input data from the user, the computer will calculate

the user's BMI, or body mass index, handled by the following

formula.

```

BMI = weight(kg) / height(m)^2

```



### Note:

The user is asked to supply their height in feet and inches measurement in the format F'I" where F

represents feet and I represents inches. **Your program does not need to handle invalid entry format

other than the user entering a value of 0 for their height;** instead, you should plan to use the `String`

methods `indexOf` and `substring` to extract the digit values from the user input.



## Important Conversion and Output Information

- 1 inch == 0.0254 meters

- 1 pound == 0.454 kg



### Note:

You will have to convert the supplied information from the user into the appropriate metric values.

For output conversion, you will be required to use a `DecimalFormat` object (see a link to a tutorial on

the Unit 2 course page) so that the user's BMI is output to the screen with a maximum of 2 decimal places

(including trailing zeros, if they exist).



## Sample input/output:

`Enter your height in feet and inches (Ex 6'1"): 5'11"` (user entry)

\

`Enter your weight in pounds: 175 `(user entry)

\

`Your BMI, expressed as weight(kg)/height(m)^2: 24.43 kg/m^2`



## Required Methods and private Data:

Your version of `BMICalc` must contain the following methods:

```java

class BMICalc {

    /**

     * Convert English to metric units, perform the BMI calculation.

     * NOTE: this method must properly handle bad data

     */

    public static double computeBMI(int inches, int pounds) {

    }



    /**

     * Uses a Scanner to prompt the user for info, process the

     * feet/inches conversion, calls the computeBMI method and prints the

     * correct information. 

     */

    public static void main(String[] args) {

    }

}

```

# Documentation Requirements:

Your version of `BMICalculator` must include the following comments/documentation:

- A standard 3-line Javadoc header comment

- A Javadoc comment for each of the two methods of the class

# Testing specifications:

Your `BMICalculator.java` file will be run against a JUnit test called `BMICalcTester.java`.



`BMICalcTester.java` will only test your `public static double computeBMI(int

inches, int pounds)` method and it must pass all of the tests to receive credit. The

`BMICalcTester.java` file will be linked to this lab description.

# What to hand in:

Please hand in the following file through the Veracross drop box:

- `BMICalculator.java`



**_DO NOT_** submit a `.class` file!

#Grading rubric:

| Description | Points |

|-------------|--------|

|BMICalculator.java contains correct 3-line Javadoc header comment | 3|

|BMICalculator.java contains correct Javadoc method documentation | 2|

|BMICalculator.java compiles without errors | 4|

|BMICalculator.java executes to completion without crashing | 4|

|BMICalculator.java correctly utilizes the String methods indexOf and substring as well as the Integer.parseInt method to parse user input into useful data for BMI calculation. | 3|

|BMICalculator.java correctly utilizes a DecimalFormat object to format the output to two decimal places for BMI calculation. | 2|

|BMICalculator.java produces the exact output/input as specified in the lab description. | 3|

|BMICalculator.java passes all 16 of the supplied JUnit test assertions | 8|



|**_Code Coverage Rubric_**| |

|----|----|

|At least 50% code coverage | +2 points |

|At least 60% code coverage | +4 points |

|At least 70% code coverage | +6 points |

|At least 80% code coverage | +8 points |

|At least 90% code coverage |+10 points |



|||

|---|----|

Student submits the correct file that is properly named to the Veracross drop box, meeting the lab submission deadline | 6

**TOTAL POINTS available for Lab 02.01 BMI Calculator** | 45 points



# Honor Code policy:

You may ask a classmate for help with your code and any associated algorithms, but you may not directly

share your code with a classmate. Sharing code in _any_ manner (email, texting, printed copies, etc.) as well

as precise and exact copying of a classmate's code is considered a clear-cut violation of Durham

Academy's Honor Code. You may also use code or algorithm assistance found online. If you ask

someone for help or look at a program online, you must list the names of your classmate(s) with whom

you worked or put the URL of the example project in the header comment of your program. All programs

will potentially be examined for copied code using the Unix `diff` utility program. If your code is very

close to that of a classmate, at a minimum you will have a discussion with your teacher. _Most violations

of this policy in years past have been sent to the school's Honor Council for additional investigation.)_