$54\mathrm{.}9$ Project: Calculate Weighted GPA LAB

$54\mathrm{.}9\mathrm{.}1$: Project: Calculate Weighted GPA

LetterToGPA.java

$****$ DESCRIPTION OF PROGRAM HERE

Mauthor YOUR NAME HERE

eversion DATE HERE

$*/$

import java.util.Scanner;

public class LetterToGPA $\{$

public static void main$($String $\backslash$square args$)\{$

Scanner input $=$ new Scanner$($

System.in$)$;

$\}$

$/*$ Type your code here. $*/$

Write a program that prompts the user for the letter grades and associated credit hours for four classes and output the weighted GPA. The

heed to use the if statement isteger. In order to convert the letter grade to its GPA form, use the code from the LetterToGPA lab. You will

are not checking for irralid input in this project. As the user enters grades and credit hours for four courses, you will want to keep a running

total credit hours

This formula essentialy means that for each class, you take a grade as input $($each letter grade will have a corresponding GPA that you

feed to associate with it$)$ and multiply the GPA by the class's credit hours. For instance, if you inpun A and $3,$ the caloulation would be $4.$

$3,$ which would yield $12$

Let's take a look at an example below with the following course grades and credit hours as input:

Sample Example

Since we only take four classes as input, we do four different multipications, sum their results, and divide by the total number of creaits

Step $1$:

We will compute each multiplication of GPA and cresit hour calculation

ist Muttiplication $($Class $1)$: Input A and $4$

Multiplication Result: $4\mathrm{.}0*4=12$

$2$nd Mutiplication $($Class $2)$: Input: e$-$ and $2$

Multiplication Result: $2\mathrm{.}7*2=5\mathrm{.}4$

$3$rd Multiplication $($Class $3).$ Input: B and $2$

Multiplication Result: $3\mathrm{.}0*2=6\mathrm{.}0$

$4$th Multiplication $($Class $4)$: Input: C$+$ and $3$

Multiplication Result: $2\mathrm{.}3*3=6\mathrm{.}9$

We will now add these values topether to obtain the rumerator portion of the formuls.

numerator $={\displaystyle \underset{k=1}{\overset{4}{}}}$credit hours ${?}_{(}()()k)$ grade's ${?}^{(}()()\text{'})$ numerical value ${?}_{(}()()k)=12+5\mathrm{.}4+6\mathrm{.}0+6\mathrm{.}9=30\mathrm{.}3$

Step $2$:

We will now add these values and dvide by the total number of credit hours we have provided as input

Total Credit Hours : $4+2+2+3=11$

denominator $=$ total credit hours $=11$

Step $3$:

We will now divide the numerator by the denominator to cotain our final result for our calculated weighted GPA.

$\frac{\text{n}\text{u}\text{m}\text{e}\text{r}\text{a}\text{t}\text{o}\text{r}}{\text{d}\text{e}\text{n}\text{o}\text{m}\text{i}\text{n}\text{a}\text{t}\text{o}\text{r}}=\frac{30\mathrm{.}8}{11}$~~$2\mathrm{.}7545$

All Steps together Using Formula:

GPA$=\frac{4\mathrm{.}04+2\mathrm{.}72+3\mathrm{.}02+2\mathrm{.}33}{4+2+2+3}=\frac{30\mathrm{.}3}{11}$~~$2\mathrm{.}7545$

Learning objective: To use for loops and iherative variable updates.

Sample Outputs: This is a sample transcript of what your program should da$.$ Make sure your oulput looks EXACTLY ike the outpun below.

Sample un t:

Please insert the letter grades and credit hours for your four classes below once pronpted

Enter the associated oredit hours: $4$

Enter a letter grade: B

Enter a letter grades credit hours:

Enter the associated credit hours:

GPA

coodbye!

Sample run $2$:

Hints:

You will need to wite a loop to take in all the classes

You will want to keep a string variable that holds the table that you want to print, and every time you loop, you will want to add a nes

table line to the end of that string. You can start a new line with the character $"$yr$".$ We also use tabs instead of spaces in our table

which can be added by witting $"$It in your string.

Start with a GPA $=0$ and add on the weighted GPA for each class.

You can then divide by the total credit hours at the end of your whie loop to get the weighted GPA When you do this, try multiplying